# ACTIVITY ACTIVITY API Reference ## Retrieve By Id Invoice Detail - [GET /rest/2.0/ACTIVITY/{id}](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/retrieve_by_id_activity.md): Get Invoice Detail By Id ## Retrieve Filtered Invoice Detail - [GET /rest/2.0/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/retrievefiltered_activity.md): Get record(s) using filters ## Save Invoice Detail - [POST /rest/2.0/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/post_activity.md): Save Invoice Detail ## Update Invoice Detail - [PUT /rest/2.0/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/put_activity.md): Update Invoice Detail ## Delete Invoice Detail - [DELETE /rest/2.0/delete/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/delete_activity.md): Delete Invoice Detail ## Retrieve By Id Invoice Detail - [GET /rest/2.0/ACTIVITY/{id}](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/retrieve_by_id_activity.md): Get Invoice Detail By Id ## Retrieve Filtered Invoice Detail - [GET /rest/2.0/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/retrievefiltered_activity.md): Get record(s) using filters ## Save Invoice Detail - [POST /rest/2.0/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/post_activity.md): Save Invoice Detail ## Update Invoice Detail - [PUT /rest/2.0/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/put_activity.md): Update Invoice Detail ## Delete Invoice Detail - [DELETE /rest/2.0/delete/ACTIVITY](https://bp-api-docs-v3.redocly.app/demogm_08_01_2025_schema/activity/delete_activity.md): Delete Invoice Detail