hashicorp/nomad · error

job ID in payload did not match URL

Error message

job ID in payload did not match URL

What it means

JobScaleRequest.Validate: the scale request URL targets one job ID but the payload body carries a different JobID. The RPC layer rejects the mismatch to prevent scaling the wrong job. (The adjacent namespace check is the analogous guard for the header namespace.)

Source

Thrown at nomad/structs/structs.go:887

	// If EnforceIndex is set then the job will only be scaled if the passed
	// JobModifyIndex matches the current Jobs index. If the index is zero,
	// EnforceIndex is ignored.
	EnforceIndex   bool
	JobModifyIndex uint64

	WriteRequest
}

// Validate is used to validate the arguments in the request
func (r *JobScaleRequest) Validate() error {
	namespace := r.Target[ScalingTargetNamespace]
	if namespace != "" && namespace != r.RequestNamespace() {
		return NewErrRPCCoded(400, "namespace in payload did not match header")
	}

	jobID := r.Target[ScalingTargetJob]
	if jobID != "" && jobID != r.JobID {
		return fmt.Errorf("job ID in payload did not match URL")
	}

	groupName := r.Target[ScalingTargetGroup]
	if groupName == "" {
		return NewErrRPCCoded(400, "missing task group name for scaling action")
	}

	if r.Count != nil {
		if *r.Count < 0 {
			return NewErrRPCCoded(400, "scaling action count can't be negative")
		}

		if r.Error {
			return NewErrRPCCoded(400, "scaling action should not contain count if error is true")
		}

		truncCount := int(*r.Count)
		if int64(truncCount) != *r.Count {

View on GitHub (pinned to 482b49bf1a)

Solutions

1. Make the job ID in the request payload match the URL path

When it happens

Trigger: Thrown at nomad/structs/structs.go:887 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hashicorp/nomad@482b49bf1a (2026-09-04). Data as JSON: /api/errors/be4bed50c224d825. Report an issue: GitHub.