CodePipelineEngineOutput

One call a step made to its coding tool: the exit code and both output streams, recorded whether it succeeded or failed. Read them to find out why a step failed.

Kind: an object, used in responses.

Fields

Every field is present in a response; empty ones are null.

Field	Type	Description
sequence	integer	The call’s number within the step, starting at 1 and counting across every retry and resume.
dateUtc	datetime	When the call was made, in UTC.
purpose	string | null	What the call was for: the step’s own prompt, the structured-output question, a repair pass, and so on. It tells a failed step apart from a failed side call.
returnCode	integer	The coding tool’s exit code. -2147483648 means it was stopped before it exited: see terminationReason.
stdOut	string | null	What the coding tool wrote to standard output.
stdErr	string | null	What the coding tool wrote to standard error.
internalError	string | null	A failure around the coding tool rather than from it, such as it failing to start or being stopped.
terminationReason	string | null	Why the coding tool was stopped, when it didn’t exit by itself: "Timeout", "Inactivity", "Cancelled" or "EngineLaunchFailure". Null when it exited normally.
isTruncated	boolean	Whether stdOut or stdErr was shortened because it was very large. The start and the end are kept, so the error and any stack trace survive.

Example

{
  "sequence": 0,
  "dateUtc": "2026-10-26T12:00:00.0000000Z",
  "purpose": "...",
  "returnCode": 0,
  "stdOut": "...",
  "stdErr": "...",
  "internalError": "...",
  "terminationReason": "...",
  "isTruncated": false
}

Where it’s used

• Inside CodePipelineStepExecution