# ActiveCampaign — CRM API: gotchas

> Canonical URL: https://developers.apideck.com/apis/crm/activecampaign/gotchas

## POST /crm/opportunities

The `primary_contact_id` is required in the request body
## GET /crm/lists

ActiveCampaign lists are always `static` collections of contacts (rule-based segments are a separate ActiveCampaign resource not exposed here), so `object_type` is always `contacts`. `record_count` reflects active subscribers and is only returned on the list operation, not on a single-list fetch. `created_by`/`updated_by` are mapped directly from ActiveCampaign's own `created_by`/`updated_by` fields, which were observed as `null` on every list in testing; population on multi-user accounts has not been verified. `folder_id`, the favorite/default/system flags, `custom_fields`, and `tags` are not available. `visibility` reflects whether the list is exposed to contacts on public subscription/preference pages, not internal user sharing (ActiveCampaign has no per-user list sharing — every list is visible to all account users); it maps from the list's `private` flag (`private` or `shared`).

## GET /crm/lists/{id}

ActiveCampaign lists are always `static` collections of contacts (rule-based segments are a separate ActiveCampaign resource not exposed here), so `object_type` is always `contacts`. `record_count` reflects active subscribers and is only returned on the list operation, not on a single-list fetch. `created_by`/`updated_by` are mapped directly from ActiveCampaign's own `created_by`/`updated_by` fields, which were observed as `null` on every list in testing; population on multi-user accounts has not been verified. `folder_id`, the favorite/default/system flags, `custom_fields`, and `tags` are not available. `visibility` reflects whether the list is exposed to contacts on public subscription/preference pages, not internal user sharing (ActiveCampaign has no per-user list sharing — every list is visible to all account users); it maps from the list's `private` flag (`private` or `shared`).


[API reference](https://developers.apideck.com/apis/crm/reference.md) · [Coverage matrix](https://developers.apideck.com/apis/crm/coverage)