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POST
Update incident custom field

Restrictions

Authorizations

app_key
string
query
required

App key issued from the Flashduty console under Account → APP Keys. Required on every public API call. Keep it secret — it grants the same access as the owning account.

Body

application/json

Parameters for updating a custom field value on an incident.

incident_id
string
required

Incident ID (MongoDB ObjectID).

Pattern: ^[0-9a-fA-F]{24}$
field_name
string
required

Custom field name; must match a field defined on the account.

field_value
any

New field value. Type must match the field definition.

Response

Success

Success response envelope. On every 2xx response, request_id identifies the call (also mirrored in the Flashcat-Request-Id header) and data holds the endpoint-specific payload. Failure responses use a different shape — see ErrorResponse.

request_id
string
required

Unique ID for this request. Mirrored in the Flashcat-Request-Id response header. Include it when reporting issues.

Example:

"01HK8XQE3Z7JM2NTFQ5YJ8P9R4"

data
object
required

Empty response body. The server returns data: null on success.