CRM migration

Migrate from Unim to Twenty CRM

Field-level mapping, validation, and rollback between Unim and Twenty CRM. We move data and schema; workflows are rebuilt natively in Twenty CRM.

Unim logo

Unim

Source

Twenty CRM

Destination

Twenty CRM logo

Compatibility

80%

8 of 10

objects map 1:1 between Unim and Twenty CRM.

Complexity

CModerate

Timeline

3-5 weeks

Rollback included Accuracy guarantee Field-level validation

Overview

What this migration involves

Migrating from Unim to Twenty CRM requires treating schema discovery as the first migration step, not a pre-migration checkbox. Because Unim builds every deployment to order, no two tenants share the same set of custom fields, datatypes, or entity relationships. We introspect the live Unim API to enumerate every active custom field, resolve DataType IDs and ModelID references, and map them to Twenty's People, Company, and Opportunity objects plus any custom objects the destination workspace requires. Owner IDs are instance-scoped in Unim and must be resolved via email match to Twenty workspace members before record import. Activities (calls, emails, notes, meetings) migrate as Tasks or Notes attached to the parent People record. Workflows, automations, and bespoke business logic built within Unim's application builder do not translate across to Twenty's workflow system; we deliver a written inventory of every active automation for the customer's admin to rebuild in Twenty's settings. File attachments migrate from Unim's Files dimension with binary extraction and re-association to the target People or Company record in Twenty.

Field-level fidelity

Every standard and custom field arrives verified.

Schema-aware mapping

AI proposes the map; you confirm before any record moves.

Relationships preserved

Parent–child, lookups, and ownership stay linked.

Full activity history

Calls, emails, meetings — with original timestamps.

Attachments & notes

Documents, uploads, and inline notes move with the record.

Why teams make this switch

Two sides of the same decision

Leaving

Unim logo

Unim

What's pushing teams away

  • Pricing is not disclosed publicly — every prospect must go through a custom-proposal conversation, making procurement comparisons slow and opaque.
  • Custom-development positioning means support, feature roadmap, and upgrade paths depend heavily on the vendor's capacity rather than a versioned product release cadence.
  • Small public review footprint and limited independent reviewer feedback make vendor due diligence hard for buyers.
  • No published API documentation; integration capability beyond the documented modules requires vendor-side custom build, creating ongoing dependency.
  • Broad horizontal positioning (CRM + accounting + HR + projects) means vertical depth in any single module is shallower than dedicated best-of-breed alternatives.

Choosing

Twenty CRM logo

Twenty CRM

What's pulling them in

  • Top open-source CRM on GitHub with 40.6K stars, giving teams full source code access and infrastructure ownership without per-feature licensing surprises.
  • Free self-hosting under AGPL-3.0 means unlimited users and custom objects for the cost of cloud infrastructure alone, typically $20–100/month.
  • Pricing page explicitly mocks competitors for charging add-on fees for API access, webhooks, and workflows — transparency that resonates with RevOps teams burned by Salesforce.
  • Unlimited custom objects and fields with no price impact, letting teams shape the data model to their business rather than forcing business into rigid schemas.
  • Modern TypeScript/React/PostgreSQL stack means developer-led teams can extend, self-host, or integrate without fighting legacy architecture.

Object mapping

How Unim objects map to Twenty CRM

Each row shows how a Unim 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.

Unim

Contact

maps to

Twenty CRM

People

1:1
Fully supported

Unim Contact records map to Twenty People. The Unim Contact model carries standard fields (name, email, phone, address) plus a variable set of custom fields discovered at schema-introspection time. We inspect the Contact ModelID and enumerate every active custom field before defining the import map. Email is used as the dedupe key. Standard Unim Contact fields map directly to their Twenty People equivalents; custom fields are created in Twenty Settings → Data Model before import begins.

Unim

Company

maps to

Twenty CRM

Company

1:1
Fully supported

Unim Company records map to Twenty Company. The same schema-discovery pattern applies: we enumerate the Company model's ModelID, active custom fields, and datatypes before writing migration code. Domain-based dedupe is applied. Company is loaded before People so that the Twenty People record can reference the parent Company via the workspaceId or linked Company record at import time.

Unim

Activity

maps to

Twenty CRM

Task or Note

1:1
Fully supported

Unim Activity records—calls, emails, meetings, notes—carry timestamps, owner references, and optionally linked custom fields. We map call activities to Twenty Task with a task-type annotation, meeting activities to Task with date/time and location preserved, and note activities to Note records linked to the parent People or Company. Activity-to-contact linkage is preserved by setting the target People ID at migration time. Owner references require email-based resolution against the Twenty workspace members.

Unim

Custom Field

maps to

Twenty CRM

Custom Field (on People, Company, Opportunity)

lossy
Fully supported

Unim custom fields have a Name, ModelID, DataType, and Nullable flag. DataTypes are resolved via the valuelists endpoint. We query this endpoint to enumerate every active custom field on each entity, map the datatype to the closest Twenty field type (text, number, date, select, multi-select, checkbox, URL, currency), and pre-create the field in Twenty Settings → Data Model before any records are imported. This is the highest-risk step for data loss if skipped.

Unim

Custom Object

maps to

Twenty CRM

Custom Object

1:1
Fully supported

Bespoke entity types beyond the standard Contacts/Companies/Activities triad are defined at the Unim application level. We discover these via schema introspection, enumerate their field sets and datatypes, and create equivalent custom objects in Twenty's workspace. Custom object-to-standard object lookup relationships (e.g., a bespoke Project entity linked to People) are resolved at migration time using the parent-record ID pattern. Each custom object migration runs after its parent standard object has been imported.

Unim

User / Owner

maps to

Twenty CRM

Workspace Member

1:1
Fully supported

Unim Owner IDs assigned on records are scoped to that specific deployment and cannot be used as-is in Twenty. We map source owner IDs to Twenty workspace members using email as the join key. Twenty requires that all referenced members exist in the workspace before import; we validate member presence and flag any owner without a matching workspace member for the customer's admin to provision before record import resumes.

Unim

Files / Attachments

maps to

Twenty CRM

Attachments (on People or Company)

1:1
Fully supported

Attachments in Unim are served via the Files dimension, not inline with the record. Each attachment requires a separate API call to fetch the binary blob. For large migrations, we paginate file extraction and apply retry logic on 429 responses. Files are re-associated with the target People or Company record in Twenty using Twenty's file attachment API, with original filenames and MIME types preserved.

Unim

Tag / Label

maps to

Twenty CRM

Custom Field (multi-select) or Note

lossy
Fully supported

Tag associations in Unim are stored as separate linked records or as array fields depending on the specific deployment. We preserve tag-to-record linkages as a join table and either map to a Twenty multi-select custom field or attach as a Note on the target record, depending on tag cardinality. The customer chooses the strategy during scoping.

Unim

Workflow / Automation

maps to

Twenty CRM

Not migrated

1:1
Fully supported

Business-logic workflows built within Unim's application builder are tightly coupled to that specific application's custom object model and cannot be meaningfully exported or re-imported into Twenty. We export a written inventory of every active Unim workflow with its trigger, conditions, actions, and a recommended Twenty workflow equivalent, so the customer's admin can rebuild them post-migration.

Unim

Webhook

maps to

Twenty CRM

Not migrated

1:1
Fully supported

Webhook configurations are environment-level settings tied to Unim's internal routing and event model. They do not translate across to Twenty's webhook or integration system. We document active webhooks for the customer's awareness and recommend rebuilding them using Twenty's API or a middleware platform (n8n, Zapier) post-migration.

Gotchas + challenges

What specifically takes care here

Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.

Unim logo

Unim gotchas

High

Every Unim instance has a unique custom field schema

Medium

Custom field datatypes require a separate lookup call

High

No public API documentation for the core business objects

Medium

File attachment extraction requires a separate Files API call

Medium

Owner/user IDs are instance-scoped and not portable

Twenty CRM logo

Twenty CRM gotchas

High

Import order is enforced and critical

High

Export limited to 20,000 records and visible columns only

Medium

Soft-deleted records count toward uniqueness and trigger restores

Medium

API rate limits cap at 200 req/min on Organization tier

Low

No native email sequences — follow-up cadences require external tools

Pair-specific challenges

  • Unim schema is unique per deployment — discovery is mandatory

    Unim applications are built per-customer, meaning no two tenants share the same set of custom fields, datatypes, or entity relationships. We cannot apply a pre-defined migration template. We must always introspect the live Unim API to enumerate the Contact, Company, and Activity models plus any bespoke object types before writing migration code. Skipping schema discovery results in silently dropped custom fields on every imported record. This phase typically adds one to two weeks to the timeline for complex deployments.

  • Custom field datatypes require a separate valuelists lookup

    To reference or create a custom field via the Unim API, you must first look up its DataType ID and ModelID from the valuelists endpoint and entity definitions respectively. These are reference fields, not raw string values. Our migration tooling fetches these dependencies upfront so that field creation payloads in Twenty are complete and valid. Migrations that skip the valuelists call may create fields with incorrect datatypes, causing validation failures on import.

  • Twenty requires workspace members before record import

    Twenty's CSV import cannot resolve owner references for users who do not exist in the workspace. All users referenced as record owners in the migrating data must be invited to the Twenty workspace and have accepted their invitation before import begins. We resolve Unim owner IDs to Twenty workspace members by email match, flag any owners without a matching workspace member, and hold record import until the customer's admin provisions the missing users. This is a common cause of migration delays.

  • Twenty fields must exist before CSV import begins

    The Twenty CSV import creates records, not fields. All custom fields referenced in the import file must be created in Settings → Data Model before the import runs. We handle this as part of the schema setup phase: after discovering Unim's custom fields, we create the equivalent Twenty fields (with type-mapped datatypes) and only then begin record import. Import files that reference undefined fields cause silent column drops on the Twenty side.

  • App health status can show outage after v1.x upgrades

    Twenty users on the self-hosted deployment model have reported that after v1.x version upgrades, the app health status in the admin interface displays 'App outage' due to pending migrations triggered by workspace schema changes. This is a Twenty internal state issue that resolves once the background migration tasks complete. We recommend scheduling the migration cutover at a time that allows the Twenty instance to settle after any recent version upgrades before beginning the import.

Migration approach

Six steps for a successful Unim to Twenty CRM data migration

  1. Schema discovery and custom field enumeration

    We introspect the live Unim API against the customer's specific deployment. This includes querying the custom-fields endpoint for Contact, Company, and Activity models, resolving DataType IDs via the valuelists endpoint, enumerating any bespoke object types defined at the application level, and cataloguing file attachment counts per entity. The discovery output is a written schema map: every source field, its Unim datatype, and the recommended Twenty field type. This phase runs against the production Unim instance with read-only API access and typically completes within two to three days.

  2. Twenty workspace provisioning and custom field creation

    Using the schema map from discovery, we provision the Twenty workspace: creating custom objects, adding custom fields to standard objects (People, Company, Opportunity) via Settings → Data Model, and configuring field settings (required, unique, select options). We configure workspace members and invite all team members who will be referenced as record owners. The workspace is provisioned in a staging context first for validation before production migration begins.

  3. Owner and user reconciliation

    We extract every distinct Unim Owner referenced across Contact, Company, Activity, and custom object records. Each owner ID is resolved by email match against the Twenty workspace member list. Owners without a matching Twenty user go to a reconciliation queue for the customer's admin to provision before record import resumes. We also audit the Unim user list for any deactivated accounts that should be mapped to inactive Twenty users to preserve historical assignment data.

  4. Staging migration and record reconciliation

    We run a full migration into a staging or shadow Twenty workspace using production-equivalent data volume. The customer's operations lead reconciles record counts (People in, Companies in, Activities in), spot-checks 25-50 random records against the Unim source, and validates that custom field values populated correctly. Any mapping corrections, datatype mismatches, or field creation gaps are resolved here before the production migration begins. This step typically runs over a weekend.

  5. Production migration in dependency order

    We run production migration in record-dependency order: workspace members validated, Companies (from Unim Companies), People (with CompanyId resolved), Opportunities (if present in Unim), Activity history (Tasks and Notes via CSV or API, with PeopleId resolved), custom objects (with parent-record lookups resolved), and file attachments (extracted via Unim Files API and re-associated in Twenty). Each phase emits a row-count reconciliation report before the next phase begins. We apply retry logic and exponential backoff on Unim API 429 responses during file extraction.

  6. Cutover, validation, and automation inventory handoff

    We freeze Unim writes during the cutover window, run a final delta migration of any records modified during the migration phase, then enable Twenty as the system of record. We deliver the workflow and automation inventory document to the customer's admin team, listing every active Unim workflow with its trigger, conditions, and recommended Twenty equivalent. We support a five-day hypercare window where we resolve any record-level reconciliation issues. We do not rebuild Unim workflows inside the migration scope; that is a separate engagement.

Platform deep dives

Context on both ends of the pair

Unim logo

Unim

Source

Strengths

  • Custom-built per customer rather than configured off the shelf.
  • All-in-one suite covering CRM, sales, projects, accounting, HR, and payroll.
  • Included data migration and unlimited custom-field configuration.
  • Auto-communication module with website-form lead capture.
  • Geo-location tracking and role-based access for mobile and hybrid teams.

Weaknesses

  • Pricing not disclosed — sales-led only.
  • Custom-development model creates ongoing vendor dependency.
  • No published API documentation for self-serve integration.
  • Broad horizontal scope at the cost of vertical depth.
  • Small public review footprint limits independent validation.
Twenty CRM logo

Twenty CRM

Destination

Strengths

  • AGPL-3.0 open-source license with full source code on GitHub — no vendor lock-in, no sunset risk.
  • Unlimited users and unlimited custom objects on self-hosted, with no feature gating based on headcount.
  • REST and GraphQL APIs available on all paid tiers, not locked behind an enterprise add-on fee.
  • MCP server and webhooks shipped as standard features, not premium upgrades.
  • Modern PostgreSQL-backed data model that developer teams can query, extend, and self-host.

Weaknesses

  • Recent v1.0 release means limited production hardening compared to CRMs with multi-year operational track records.
  • No native email sequencing or sales engagement tools — follow-up cadences require a separate platform.
  • No native two-way email sync or inbox integration, requiring third-party connectors for full activity logging.
  • Self-hosting 'free' pricing hides real infrastructure and DevOps costs that stack up over time.
  • Workflow automation is functional but lacks the complexity needed for sophisticated multi-step sales motions.

Complexity grading

How hard is this migration?

Moderate CRM migration. 4 of 8 objects need a mapping; the rest are 1:1.

C

Overall complexity

Moderate migration

Derived from compatibility, mapping clarity, API constraints, and data volume across Unim and Twenty CRM.

  • Object compatibility

    C

    4 of 8 objects need a mapping; the rest are 1:1.

  • Field mapping clarity

    C

    Field mapping is derived from defaults — final spec confirmed during the sample migration.

  • Timeline complexity

    B

    8-object category — typical timelines run 2–7 days end-to-end.

  • API constraints

    B

    Unim: Not publicly documented — confirmed during integration scoping..

  • Data volume sensitivity

    B

    Unim doesn't expose a bulk API — REST + parallelization used for high-volume runs.

Estimator

Estimate your Unim to Twenty CRM migration cost

Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.

Step 1

What are you migrating?

Pick a category, then your source and destination platforms.

Category

FAQ

Frequently asked questions about Unim to Twenty CRM data migrations

Answers to the questions buyers ask most during Unim to Twenty CRM migration scoping. Not seeing yours? Book a call.

Can't find your answer?

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Book a free 30 minute consultation

Most Unim migrations land between three and five weeks. The discovery phase (schema introspection, custom field enumeration, valuelists resolution) adds one to two weeks before record migration begins. Migrations with multiple bespoke object types, large activity histories (over 100,000 engagement records), or extensive file attachment sets move to seven to ten weeks because of the paginated file extraction and parent-record lookup resolution work. Twenty CRM itself has no mandatory onboarding timeline, which keeps the post-migration configuration phase manageable.

Adjacent paths

Related migrations to explore

Ready when you are

Move from Unim.
Land in Twenty CRM, intact.

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