Bulk create and update Tasks

Executes a batch of Task operations (creates and updates) for a single Workflow Process.

Request Rules:

• Only In Progress or Not Started Processes are permitted
• Tasks with an id are treated as updates
• Tasks without an id (or id: null) are treated as creates
• Updates are processed before creates
• New tasks are always created with status DRAFT regardless of supplied value
• Only Workflow Managers can access this endpoint

Resources:

• Each task supports a resources array of {id, content_type} objects
• Valid content_type values: dashboard, template, templateupload, canvas
• Maximum of 1 resource per task
• Omit resources to preserve existing; set to [] to clear all
• User must have view access to a resource to assign it
• Restricted resources are returned with permission_denied: true and content: {}

Response Behavior:

• Returns 400 for request-level validation errors (invalid process_id, missing tasks, duplicate task IDs)
• Returns 200 with per-task results for individual task operations (partial success supported)
• Each result has task (data or null) and errors (null or error details)
• On update failure, task contains current state; on create failure, task is null

Per-Task Error Structure (flat array):

• Each error has: code, detail, and source
• Field errors: source: { field: "name" } with DRF codes (null, required, invalid)
• Business errors: source: null with custom codes (INVALID_DATE_PAST_DUE, DUPLICATE_NAME)
• Multiple errors can be present on a single task