v36

OpenAPI 3.1.0raw.githubusercontent.com2026-08-0187270483.0 KB

Webhooks

Error event

Delivered when a function call terminates with an error that's surfaceable to the customer. The user-facing failure reason is in message.

For signing-secret setup and retry semantics that apply to every variant, see the Webhooks overview.

postWebhookerror

Payload

functionCallTryNumberinteger

The attempt number of the function call that created this event. 1 indexed.

eventIDstring required

Unique ID generated by bem to identify the event.

createdAtstring date-time

Timestamp indicating when the event was created.

referenceIDstring required

The unique ID you use internally to refer to this data point, propagated from the original function input.

eventType'error'

functionCallIDstring

Unique identifier of function call that this event is associated with.

functionIDstring required

Unique identifier of function that this event is associated with.

functionNamestring required

Unique name of function that this event is associated with.

functionVersionNuminteger

Version number of function that this event is associated with.

callIDstring

Unique identifier of workflow call that this event is associated with.

workflowIDstring

Unique identifier of workflow that this event is associated with.

workflowNamestring

Name of workflow that this event is associated with.

workflowVersionNuminteger

Version number of workflow that this event is associated with.

messagestring required

Error message.

kindstring

Open, extensible error-kind label for typed transformation errors. The platform emits these as plain strings and the set grows over time, so clients must accept unknown values. For render functions the known kinds are render_source_fetch, render_template_fetch, render_image_unresolved, render_validation, render_exception, render_upload, and render_contract. Omitted for historical events that pre-date the kind column and for non-transform errors.

Response

Return any 2XX status code to acknowledge receipt. The exact code is not inspected.