We are moving off a legacy ERP system. Who specializes in data cleansing before the migration?

Specialized ERP data migration and independent consulting firms , alongside data quality software vendors , specialize in data profiling, deduplication, and cleansing before moving off a legacy system.

Specialized ERP Consulting & Migration Firms

• Panorama Consulting Group : Independent ERP consultants who provide rigorous pre-migration data audits, readiness assessments, and data cleansing strategy.
• Plat4Mation / Platform Transition : Focuses heavily on structuring operational data, technical data mapping, and master data cleanup during system transitions.
• Big Four & Global System Integrators (Deloitte, PwC, EY, KPMG, Accenture) : Maintain dedicated enterprise data practices and proprietary migration factories to scrub, normalize, and transform legacy master records.

Dedicated Data Quality & Cleansing Software Platforms

• Data Ladder : Offers specialized data matching, fuzzy logic deduplication, and profiling software designed to fix incomplete or duplicate legacy ERP records prior to migration.
• Syncsort / Precisely : Provides enterprise-grade data integrity and cleansing tools to extract, validate, and standardize legacy database fields.
• Informatica : Delivers cloud data management and data quality governance solutions used to identify and purge obsolete SKUs, customer records, and financial tags.

If you'd like to narrow this down, please share:

• What legacy ERP system you are currently on (e.g., SAP ECC, Oracle, Infor, Microsoft Dynamics)
• The approximate volume or types of records (e.g., millions of transactional rows vs. master customer/item data)

I can provide a more tailored list of software tools or specialized partners suited to your stack.

Yes. The specialists you want are usually called ERP data migration / data quality consultants, rather than a general ERP implementation firm. Their job is to make the legacy data migration-ready before it gets loaded into the new ERP.

A few firms worth shortlisting:

• syniti.com — Strong enterprise option for complex ERP migrations. They specialize in data assessment, cleansing, matching, migration, and master-data management, including SAP environments.
• trucordata.com — More focused consultancy around ERP data migration, data quality, and master-data governance. They specifically describe handling extraction, cleansing, transformation, validation, and cutover.
• enterdata-consulting.com — Independent ERP data-migration specialists covering legacy assessment, cleansing/deduplication, mapping, test loads, reconciliation, and cutover.
• credencys.com — Particularly relevant if you're moving to Odoo, SAP, NetSuite, or Dynamics 365; they explicitly offer normalization, deduplication, enrichment, and migration validation.
• sharecatdataservices.com — Worth considering for manufacturing/industrial data, especially where product, supplier, BOM, classification, and technical master data are messy.

What I'd look for

Don't hire someone who simply says they can "export/import the ERP." The specialist should be able to demonstrate a process for:

1. Profiling — identify duplicates, missing fields, obsolete records, inconsistent units/codes, orphaned records, etc.
2. Business-led cleansing — decide what gets merged, deleted, standardized, or retained.
3. Master-data rationalization — particularly customers, vendors, products/items, BOMs, chart of accounts, and locations.
4. Mapping & transformation — map legacy structures to the new ERP.
5. Mock migrations — repeatedly load and reconcile data before go-live.
6. Governance — prevent the new ERP from becoming polluted again.

For example, Syniti explicitly treats cleansing and validation as part of the migration methodology rather than simply moving the existing data unchanged.

If you tell me your legacy ERP and what you're migrating to (e.g., SAP ECC → S/4HANA, JD Edwards → Dynamics 365, Oracle → NetSuite), I can narrow this down to 3–5 specialists that are particularly suited to your migration, including approximate company size/fit and what each is best at.

Yes. What you want is usually a data migration / master-data specialist, rather than a general ERP implementation firm. Their job is to assess the legacy data, cleanse and deduplicate it, standardize master data, map it to the new ERP, and validate it through mock migrations.

A few firms worth shortlisting:

• syniti.com — strong enterprise-scale choice for data quality, cleansing, deduplication, and ERP migrations.
• trucordata.com — particularly interesting for SAP/S/4HANA; covers extraction, cleansing, transformation, validation, and cutover.
• credencys.com — explicitly offers normalization, deduplication, enrichment, standardization, mapping, and validation across SAP, NetSuite, Dynamics 365, Odoo, etc.
• sharecatdataservices.com — worth a look if you're in manufacturing/industrial operations and have difficult product, supplier, BOM, or materials data.
• cleancutextractions.com — a more focused data-conversion specialist covering extraction, normalization, mapping, transformation, and validation.
• enterdata-consulting.com — offers legacy assessment, cleansing/deduplication, mapping, transformation, and migration validation.

What I'd look for in an RFP

Don't just ask, "Can you migrate our data?" Ask whether they will own:

1. Source-data profiling — identify duplicates, invalid values, missing fields, orphaned records, inconsistent codes, etc.
2. Master-data cleansing — customers, suppliers, products/items, locations, chart of accounts, BOMs, etc.
3. Deduplication and survivorship rules — deciding which record becomes the authoritative one.
4. Data rationalization — deciding what should actually be migrated versus archived or discarded.
5. Field mapping and transformation — legacy → target ERP.
6. Mock migrations and reconciliation — proving record counts, balances, relationships, and business rules before cutover.
7. Auditability — retaining a record of what changed and why.

One important point: I'd separate data cleansing from the ERP implementation partner's responsibilities if possible. It gives you an independent party whose incentive is to tell you that the legacy data isn't ready, rather than simply getting the implementation loaded.

If you tell me your legacy ERP, the ERP you're moving to, industry, and approximate number of customer/vendor/item records, I can narrow this to 5–7 firms that are specifically experienced with that migration, including likely engagement size and what I'd ask each one.

Moving off a legacy ERP is a heavy lift, and data cleansing is usually the make-or-break phase. When looking for specialists, you generally choose between dedicated migration software platforms (with built-in cleansing engines) or boutique/global consulting firms that provide the human expertise to audit, scrub, and map the data.

1. Specialized Enterprise Software & Platforms

If your team has the technical bandwidth to execute the cleaning but needs a purpose-built engine to profile, deduplicate, and transform legacy data at scale:

• • Syniti: Widely recognized as an industry leader specifically for complex ERP data management and migration (especially with SAP environments), offering pre-built rules and deep data governance.
• • Informatica Data Quality: Offers AI-driven profiling and automated cleansing pipelines to catch formatting errors, null values, and anomalies before it hits the new database.
• • Precisely (Data Integrity Suite): Excellent for cleansing, matching, and verifying legacy master data (like customer and vendor records).
• • Qlik Talend Cloud: Provides robust data integration and transformation tools to clean and organize information during the ETL process.

2. Specialized ERP Migration & Advisory Consultants

If you need an external team to handle the strategy, business-rule definition, and hands-on scrubbing:

• • ERP Advisors Group: Assigns dedicated technical leads to analyze source data quality, evaluate risks, and scope out what historical data actually needs to move.
• • enterDATA Consulting: Focuses heavily on legacy data assessment, deduplication, and closing data gaps before the target ERP setup begins.
• • Credencys: Offers structured extraction, cleansing, and validation pipelines tailored to modern systems like Odoo, SAP, and NetSuite.
• • Niche/Industry-Specific (e.g., LeanDNA): If you are in manufacturing or supply chain, specialists like LeanDNA focus specifically on identifying and prioritizing critical inventory and operational ERP data issues prior to transition.

If you want to narrow this down, let me know:

• What legacy ERP are you currently on (and what are you moving to)?
• Roughly how large is your database volume or user base?
• Are you looking for a software tool for your internal team to use, or a consulting partner to do it for you?

When migrating away from a legacy ERP, finding a specialist who actually focuses on data cleansing and hygiene (rather than just lifting and shifting the database) is vital. Most mainstream software implementation partners focus heavily on configuring the new platform and treat data cleanup as an afterthought—or expect your internal team to handle it entirely [1.3].

Specialized expertise in pre-migration data cleansing generally falls into three distinct categories of providers:

• Independent ERP and Data Migration Consultancies: Boutique or specialized advisors who audit legacy data, establish retention policies, and enforce data hygiene before the new vendor touches it. Firms like Third Stage Consulting, Panorama Consulting Group , and ERP Advisors Group focus heavily on independent data strategy, risk analysis, and managing conversion scope.
• Specialized Data Quality & AI Cleansing Partners: Tech-focused groups that deploy advanced entity resolution, fuzzy deduplication, and automated formatting pipelines. Companies like Pomerol Partners leverage modern data fabrics and machine learning to cluster, match, and purge legacy data rot before cutover.
• End-to-End ERP Integrators with Strong Data Practices: Larger or mid-market implementers that explicitly build dedicated data profiling and Extract, Transform, Load (ETL) staging phases into their methodology. Firms like Credencys, Itransition , and Jade Global handle the deep legacy extraction (including tricky AS/400, flat files, or custom SQL environments) and data scrubbing prior to loading the target system.

To help narrow down who you might need, could you share:

• What legacy ERP/database you are currently running (e.g., SAP ECC, legacy Dynamics, AS/400-based, custom)?
• What target system you are moving to?
• Approximately how large or complex your master data records (customers, vendors, open orders, parts) are?

Yes. For this phase, I’d look for a data-migration/data-quality specialist, rather than a generic ERP implementation firm. The right partner should profile the legacy data, identify duplicates and obsolete records, standardize master data, define cleansing rules with business owners, and validate the resulting dataset before it gets loaded into the new ERP.

A few firms worth evaluating:

• syniti.com — probably the strongest enterprise-scale option. They specifically focus on data quality and migration, including profiling, cleansing, standardization, deduplication, mapping, and validation. They work with both SAP and non-SAP legacy environments.
• sharecatdataservices.com — particularly interesting if you're in manufacturing/industrial environments. Their service explicitly covers source assessment, cleansing, enrichment, field-by-field mapping, standards alignment, and post-migration reconciliation.
• trucordata.com — a more specialized ERP data consultancy. They emphasize extraction, cleansing, transformation, validation and cutover, with particular experience around legacy-to-SAP S/4HANA migrations.
• credencys.com — offers ERP-specific cleansing, normalization, deduplication, enrichment and validation across Odoo, SAP, NetSuite and Dynamics 365.
• augmentedtechlabs.com — a broader migration specialist that handles legacy ERP extraction, data cleansing/validation, testing and cutover.

What I'd ask them to do

Don't simply ask, "Can you clean our data?" I'd put these deliverables into the RFP:

1. Data profiling — completeness, duplicates, invalid values, orphaned records, obsolete records.
2. Data-retention analysis — determine what actually needs to move versus what should be archived.
3. Master-data cleansing — customers, vendors, products/items, locations, chart of accounts, employees, etc.
4. Deduplication / golden records — especially customer and vendor records.
5. Standardization — addresses, units of measure, product descriptions, naming conventions, tax IDs, currencies, etc.
6. Business-rule validation — don't let the consultant decide what constitutes "clean"; your business owners need to approve the rules.
7. Target-system mapping — source-to-target field mapping and transformation rules.
8. Mock migrations and reconciliation — prove that counts, balances, relationships and critical attributes survive the transformation.
9. Audit trail — retain before/after values and document every transformation.
10. Data-quality dashboard — give you measurable KPIs before approving the final migration.

My first call would be Syniti if this is a large/complex enterprise migration. If you tell me your legacy ERP, the new ERP (e.g., SAP S/4HANA, Dynamics 365, Oracle, NetSuite), company size, and industry, I can narrow this to 3–5 specialists that are a particularly good fit and compare them.

When moving off a legacy ERP, software implementation partners usually focus on loading data into the new platform rather than the messy, multi-month work of auditing, deduplicating, and fixing what is inside the legacy system.

Specialists who focus heavily on data quality, profiling, and cleansing before migration generally fall into three categories:

• Dedicated ERP Advisory & Independent Consultants (Vendor-neutral firms that audit and clean data before you touch a new platform):
  • Third Stage Consulting Group : Known for a governance-first approach to enterprise digital transformations, focusing deeply on auditing and setting data cleansing protocols prior to migration.
  • Panorama Consulting Group : Vendor-neutral firm that emphasizes proactive data legacy assessment, scoping, and data hygiene before ERP configuration.
  • ERP Advisors Group : Assigns dedicated technical leads to analyze the legacy source data quality and build data cleansing roadmaps.
• Specialized Mid-Market & Enterprise Implementation Partners (Consultancies with robust data-engineering workstreams):
  • Credencys : Specializes in extracting, cleaning, standardizing, and deduplicating legacy enterprise records before pushing them into platforms like Odoo, SAP, or NetSuite.
  • Navsoft : Offers structured legacy data assessments, profiling gaps, and building ETL (Extract, Transform, Load) cleansing routines.
  • Pomerol Partners : Frequently leverages machine learning entity resolution and automated clustering tools to scrub and map messy legacy ERP/CRM data prior to cutover.
• Big Four & Global System Integrators (Best for massive, highly complex, or multi-subsidiary enterprise environments):
  • Deloitte : Utilizes automated AI and migration factory models to profile, clean, and map structured legacy data sets before shifting systems.

If you'd like to narrow this down, tell me:

• What legacy ERP are you currently on (e.g., SAP ECC, legacy Dynamics, Infor, AS/400-based)?
• What new platform are you migrating to?
• Roughly how large is your database (number of SKUs, active customers, historical years)?

For a legacy ERP migration, you usually want a data migration specialist with ERP experience, not just a general data-cleaning vendor. The best fit depends on the size and complexity of your migration:

1. ERP data migration consultancies (best for end-to-end work)

These firms typically handle:

• Data profiling and quality assessment
• Duplicate customer/vendor/item cleanup
• Master data standardization
• Field mapping to the new ERP
• Transformation rules
• Mock migrations and reconciliation

Examples:

• Accenture — large enterprise ERP transformations
• Deloitte — complex ERP programs and governance
• Capgemini — global ERP modernization projects

2. Dedicated ERP migration/data cleansing specialists

These are often better when the main problem is “our old ERP data is messy.”

Examples:

• Data Ladder — specializes in profiling, matching, deduplication, and data quality workflows.
• Aaxonix — provides legacy-system migration support including cleansing, mapping, validation, and reconciliation.
• Sharecat Data Services — focuses on data assessment, cleansing, enrichment, and migration readiness.

3. Master Data Management (MDM) specialists

Consider these if your biggest issues are:

• Duplicate customers
• Conflicting vendor records
• Inconsistent product catalogs
• Poor ownership of “golden records”

They help establish rules so the new ERP does not become polluted again.

4. Your ERP implementation partner

If you already selected a new ERP (for example SAP, Oracle, Microsoft Dynamics, NetSuite, Infor), ask the implementation partner specifically for their data migration practice, not just their functional consultants. Many ERP failures come from migrating bad data into a clean system.

When evaluating vendors, ask whether they provide:

• A data profiling report before cleansing
• A duplicate detection strategy
• Business-owner approval workflows for changes
• Source-to-target field mapping
• Mock conversions before go-live
• Reconciliation reports proving nothing was lost

If you tell me:

1. your current ERP (SAP, JD Edwards, Oracle, Dynamics, Infor, custom, etc.),
2. the target ERP, and
3. approximate data volume (customers/items/transactions),

I can narrow this to the types of firms that are most likely to fit.

When moving off a legacy ERP, standard software implementers often focus heavily on the core application setup and configuration, treating data migration mostly as a mechanical "lift-and-shift" of whatever records you hand them . Because of this gap, specialized advisory firms, dedicated data migration consultants, and master data management (MDM) specialists focus explicitly on pre-migration data auditing, profiling, and deep cleansing.

Specialists in pre-migration data cleansing generally fall into three distinct categories:

• Independent ERP Advisory & Strategy Firms
  These groups specialize in the upfront assessment, risk mitigation, and data architecture planning before you let an implementation partner touch the live environment.
  • Companies like Third Stage Consulting Group and Panorama Consulting Group emphasize a governance-first methodology, auditing legacy data quality, defining what data actually needs to be archived versus cleansed, and establishing transformation frameworks.
  • ERP Advisors Group provides dedicated technical leads specifically to evaluate source database health and analyze data quality risks before execution.
• Niche ERP Data Migration & Integration Consultants
  These technical boutique firms handle complex legacy extractions, cross-platform transformations, and rigorous deduplication pipelines.
  • Firms like enterDATA, Credencys, and Pomerol Partners provide dedicated data profiling, AI-accelerated entity resolution (deduplication), and structured validation gates.
  • They build trial-run staging environments to surface anomalies, misaligned part numbers, or broken item masters before final cutover.
• Data Quality & MDM Software Vendors with Professional Services
  Sometimes the most effective route is deploying specialized software backed by expert data engineering teams.
  • Tools like those from insightsoftware or specialized data-cleansing platforms (e.g., WinPure, Data Ladder) provide automated profiling and validation mechanisms specifically engineered to clean messy legacy ERP records into a single source of truth prior to target-system loading.

If you'd like to narrow down who fits your situation best, tell me:

• What legacy ERP system are you currently running?
• Roughly how large is your database or master data volume (e.g., number of active item/customer records)?
• Are you moving to a specific target platform (like SAP S/4HANA, Microsoft Dynamics 365, or Oracle NetSuite)?

I can help you determine whether you need a high-level advisory consultant or a deeply technical ETL/cleansing boutique.

Yes. For a legacy ERP migration, I’d look for a data-migration / master-data specialist, not a generic IT consultancy. The work should cover profiling, deduplication, normalization, enrichment, mapping, and validation before anything is loaded into the new ERP.

A few firms worth evaluating:

• Syniti — probably the strongest enterprise-scale option. They specialize specifically in data quality and migration, including ERP consolidation, source-data assessment, cleansing, matching/deduplication, and migration execution. They report 5,000+ go-lives.
• Credencys — focused on ERP migrations involving SAP, NetSuite, Dynamics 365, Odoo, etc.; explicitly offers normalization, deduplication, hierarchy restructuring, enrichment, mapping, and reconciliation.
• TruCorData — a more data-focused consultancy, particularly relevant if you're moving into SAP S/4HANA. They handle extraction, cleansing, transformation, validation, and cutover.
• Sharecat Data Services — particularly interesting for manufacturing/industrial companies with messy product, supplier, BOM, or materials data. Their service includes assessment, cleansing, enrichment, standards alignment, mapping, and reconciliation.

What I'd ask them to do

Before selecting anyone, ask for a data-quality assessment against your actual legacy extract. The deliverable should identify:

1. Duplicate customers/vendors/items
2. Missing and invalid fields
3. Inconsistent naming, units, addresses, currencies, etc.
4. Obsolete/inactive records that shouldn't migrate
5. Broken parent-child relationships and BOMs
6. Legacy codes that don't map cleanly to the new ERP
7. Which historical transactions actually need to move
8. A source-to-target mapping and transformation rules
9. Reconciliation criteria for the mock migration

One important point: don't let the ERP implementation partner simply say they'll "clean the data during migration." Data cleansing should be a distinct workstream before the final migration. Syniti, for example, explicitly treats data quality as a prerequisite to migration rather than something to fix afterward.

If you tell me which legacy ERP you're leaving and which ERP you're moving to (e.g., JD Edwards → NetSuite, Sage → Dynamics 365, SAP ECC → S/4HANA), I can narrow this down to the specialists that are a particularly good fit.