CRM migration
Field-level mapping, validation, and rollback between Star CRM and Twenty CRM. We move data and schema; workflows are rebuilt natively in Twenty CRM.
Star CRM
Source
Twenty CRM
Destination
Compatibility
6 of 10
objects map 1:1 between Star CRM and Twenty CRM.
Complexity
CModerate
Timeline
2-4 weeks
Overview
Moving from Star CRM to Twenty CRM is a migration from a lightweight, niche CRM to a self-hosted, open-source platform with a developer-first design. Star CRM provides core contact and deal tracking but lacks public API documentation and a confirmed bulk export endpoint, which requires live schema probing before any field mapping can be finalized. Twenty CRM accepts standard objects (People, Companies, Opportunities, Tasks, Notes) and supports fully custom objects configured in Settings before import. We resolve Star CRM's undocumented schema by exporting a sample record set during scoping, inferring field names and types from the observed data, and building the mapping against Twenty's typed field model. Attachments require separate file handling because Star CRM exports them individually per record. Workflows, automations, and custom views do not migrate to Twenty; we deliver a written inventory for the customer's team to rebuild post-migration.
Every standard and custom field arrives verified.
AI proposes the map; you confirm before any record moves.
Parent–child, lookups, and ownership stay linked.
Calls, emails, meetings — with original timestamps.
Documents, uploads, and inline notes move with the record.
Why teams make this switch
Leaving
What's pushing teams away
Choosing
What's pulling them in
Object mapping
Each row shows how a Star CRM object lands in Twenty CRM, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Star CRM
Contact
Twenty CRM
People
1:1Star CRM Contact records map to Twenty's People object. We perform live schema discovery against Star CRM during scoping to identify actual field names (email, phone, address, name fields) since no public API spec exists. Custom contact properties identified during discovery map to custom fields that we pre-create in Twenty's Settings → Data Model before import. The primary email field on People serves as the dedupe key during insert.
Star CRM
Company
Twenty CRM
Company
1:1Star CRM Company records map directly to Twenty's Company object. Company name becomes the Company name field, and domain or website maps to the domain field if present. Company is imported before People so that the People → Company relationship is satisfied at the moment of People insert. We resolve the association by matching People records to their parent Company by company name or a discovered foreign key.
Star CRM
Deal
Twenty CRM
Opportunity
1:1Star CRM Deals map to Twenty's Opportunity object. Deal stage maps to the Opportunity stage field, and deal value maps to the amount field. Pipeline stages from Star CRM are mapped to Twenty's Opportunity stage values during the scoping call, since stage names and counts differ between platforms. Stage-specific probability and closed-won/closed-lost dates migrate to corresponding fields on Opportunity.
Star CRM
Deal Stage
Twenty CRM
Opportunity Stage
lossyEach Star CRM pipeline's stages are mapped to Twenty Opportunity stage values. We capture the stage order and probability from Star CRM and reproduce it in Twenty's Opportunity pipeline configuration. Closed-won and closed-lost stage transitions are preserved to maintain historical pipeline integrity.
Star CRM
Activity
Twenty CRM
Task or Note
1:1Star CRM Activity records (calls, emails, meetings, notes) map to Twenty Tasks and Notes. We infer the activity type from the source data during discovery and route records to the appropriate Twenty object. Task and Note records are linked to the parent People or Company by resolving the contact or company reference from Star CRM. Activity timestamps are preserved on the Twenty record's creation date or a dedicated activity-date field.
Star CRM
Lead
Twenty CRM
People
many:1Where Star CRM distinguishes a Lead object from Contact, we export Leads separately and merge them into Twenty's People object. The original Star CRM Lead source or lead status is preserved as a custom field on the People record. We flag any Lead-specific properties during discovery that do not map directly to standard People fields for custom field creation in Twenty.
Star CRM
User
Twenty CRM
Member
1:1Star CRM User records (name, email, role) map to Twenty Members via email matching. We extract every distinct user referenced on Contact, Company, Deal, and Activity records and match by email against the Twenty Members list. Any Star CRM Owner without a matching Twenty Member goes to a reconciliation queue for the customer's admin to provision before record import resumes.
Star CRM
Custom Property
Twenty CRM
Custom Field
lossyStar CRM custom fields on any object require field-level mapping work. We read the observed source schema during discovery (via live API probing) and document all custom property names, data types, and sample values before mapping them to Twenty custom fields. Twenty custom fields must be created in Settings → Data Model before CSV import begins; the import creates records, not fields. We pre-create all required custom fields during the Twenty workspace setup phase.
Star CRM
Tag
Twenty CRM
Custom Field or Label
lossyStar CRM tags on Contacts or Deals transfer as label values. Multi-select tags may map to a Twenty custom field with multiple values or to a separate tagging configuration depending on the customer's preference. We preserve tag names and apply them consistently during import. The customer's admin chooses the tag strategy during scoping.
Star CRM
Attachment
Twenty CRM
Attachment
1:1Star CRM exports attachments as individual files per record, not as a structured archive. We download all attachment files, build a manifest linking each file to its parent record ID (Contact, Company, or Deal), then re-associate them in Twenty during upload. This step adds time proportional to attachment volume. We handle both document attachments and inline email attachments from activity records.
| Star CRM | Twenty CRM | Compatibility | |
|---|---|---|---|
| Contact | People1:1 | Fully supported | |
| Company | Company1:1 | Fully supported | |
| Deal | Opportunity1:1 | Fully supported | |
| Deal Stage | Opportunity Stagelossy | Fully supported | |
| Activity | Task or Note1:1 | Fully supported | |
| Lead | Peoplemany:1 | Fully supported | |
| User | Member1:1 | Fully supported | |
| Custom Property | Custom Fieldlossy | Fully supported | |
| Tag | Custom Field or Labellossy | Fully supported | |
| Attachment | Attachment1:1 | Fully supported |
Gotchas + challenges
Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.
Star CRM gotchas
Sparse public documentation and no published API spec
No bulk export endpoint confirmed
Attachment export produces individual files per record
Twenty CRM gotchas
Import order is enforced and critical
Export limited to 20,000 records and visible columns only
Soft-deleted records count toward uniqueness and trigger restores
API rate limits cap at 200 req/min on Organization tier
No native email sequences — follow-up cadences require external tools
Pair-specific challenges
Migration approach
Live schema discovery on Star CRM
We perform a live API discovery session against the customer's Star CRM instance. Because Star CRM has no public API documentation, we probe the API with authenticated requests to enumerate object types, field names, and relationships from the observed response structure. We export a sample record set (typically 50-100 records per object) to infer data types, date formats, custom property names, and attachment URLs. The discovery output is a written schema summary and a preliminary field mapping document against Twenty's standard objects.
Twenty workspace setup
We configure the destination Twenty workspace before any data import. This includes creating all custom objects and custom fields identified during Star CRM discovery, configuring Opportunity stage values to match the Star CRM pipeline stages, inviting all team members who will be referenced as record owners (invitations must be accepted before import), and setting up the initial Company and People record types if needed. Fields are created in Settings → Data Model; Twenty does not auto-create fields during CSV import.
Data export from Star CRM
We export data from Star CRM using the API endpoints discovered during scoping. If a bulk export endpoint is not available, we automate repeated API calls with pagination to extract records in batches. Export runs in dependency order: Companies first, then Contacts, then Deals, then Activities. We download all attachment files in parallel, build a manifest linking each file to its parent record ID, and store the manifest alongside the exported CSVs. We run exports during off-peak hours to minimize the risk of session timeouts on the Star CRM side.
Data transformation and field mapping
We transform exported records into Twenty's CSV import format. This includes mapping Star CRM field names to Twenty field names using the discovery-phase mapping document, applying format transformations (date formats, phone number normalization, address splitting), computing any split or merge logic (such as Lead-to-People merging), and resolving Owner references by matching Star CRM user emails to Twenty Member records. Any Star CRM records with unmapped fields are flagged in a reconciliation report for the customer's review before import.
Staged import into Twenty
We import records into Twenty in strict dependency order: Companies (People and Opportunity lookups depend on them), then People (Opportunity lookups depend on them), then Opportunities (with Company and Member lookups resolved), then Tasks and Notes (with People and Company lookups resolved). Each phase emits a row-count reconciliation report showing records imported, records skipped (with reason), and records held in a deferred queue. We resolve deferred records before moving to the next phase. Attachment files are uploaded after the main record import, associated to their parent records via the manifest.
Cutover, validation, and handoff
We freeze writes to Star CRM during the cutover window, run a final delta migration of any records modified during the migration window, then enable Twenty as the system of record. We validate by matching record counts, spot-checking 25-50 records against the Star CRM source, and verifying Opportunity stage distributions and Activity timelines. We deliver the workflow and automation inventory document to the customer's admin team. We support a one-week hypercare window for reconciliation issues. We do not rebuild automations, sequences, or custom views as part of the migration scope; those require separate configuration work by the customer's team.
Platform deep dives
Star CRM
Source
Strengths
Weaknesses
Twenty CRM
Destination
Strengths
Weaknesses
Complexity grading
Moderate CRM migration. 4 of 8 objects need a mapping; the rest are 1:1.
Overall complexity
Moderate migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Star CRM and Twenty CRM.
Object compatibility
4 of 8 objects need a mapping; the rest are 1:1.
Field mapping clarity
Field mapping is derived from defaults — final spec confirmed during the sample migration.
Timeline complexity
8-object category — typical timelines run 2–7 days end-to-end.
API constraints
Star CRM: Not applicable.
Data volume sensitivity
Star CRM doesn't expose a bulk API — REST + parallelization used for high-volume runs.
Estimator
Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.
Step 1
Pick a category, then your source and destination platforms.
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