Bulk Activity Service

Backend API handler that accepts a batch registration payload of shared activity fields plus an array of peer mentor user IDs. Validates cross-tenant access, enforces the batch size cap, and expands the batch into individual activity rows inside a single database transaction with full rollback on any failure.

Feature: Bulk Registration

bulk-activity-service

• Validate that every submitted peer mentor ID belongs to the coordinator's organization to prevent cross-tenant leakage
• Enforce a 100-participant batch size cap and return a structured error with a clear message if exceeded
• Expand the batch payload into individual activity records within a single database transaction so partial failures roll back cleanly
• Return per-record success or error results in the batch response for client-side feedback
• Support the mutation outbox by accepting the bulk payload as a single queued item and handling per-record error responses from the sync service