Seen this  a couple times.

The seqneuce appear to be:

after creating a vfmodule - which includes the POST to trigger and AAI update

the query of the workload id fails:

 

e.g.

GET http://\MSB_IP:MSB_PORT/api/multicloud/v1/cloud-owner/cloud-region-id/infra_workload/dc9c28d1-c123-4c2d-85fb-cf9484978e50
{
"template_type": "HEAT",
"workload_status_reason": "expected string or buffer",
"workload_status": "GET_FAILED",
"workload_id": "dc9c28d1-c123-4c2d-85fb-cf9484978e50"
}

 

After the above case, I tried the parameter variations of the query - which worked ok.

Both

GET http://\MSB_IP:MSB_PORT/api/multicloud/v1/cloud-owner/cloud-region-id/infra_workload?id=dc9c28d1-c123-4c2d-85fb-cf9484978e50

and

GET http://\MSB_IP:MSB_PORT/api/multicloud/v1/cloud-owner/cloud-region-id/infra_workload?name=vlb_vfm_ewm_2

returned an ok reponse as follows:
{
"template_type": "HEAT",
"workload_status_reason": {
"stacks": [
{
"description": "",
"parent": null,
"deletion_time": null,
"stack_name": "vlb_vfm_ewm_2",
"stack_user_project_id": "709ba629fe194f8699b12f9d6ffd86a0",
"stack_status_reason": "Stack CREATE completed successfully",
"creation_time": "2019-05-03T22:07:54Z",
"links": [

{ "href": "http://msb-iag.onap:80/api/multicloud-titaniumcloud/v1/CloudOwner/ONAP-POD-01-Rail-06/orchestration/v1/709ba629fe194f8699b12f9d6ffd86a0/stacks/vlb_vfm_ewm_2/dc9c28d1-c123-4c2d-85fb-cf9484978e50", "rel": "self" }

],
"updated_time": "2019-05-03T22:07:54Z",
"stack_owner": null,
"stack_status": "CREATE_COMPLETE",
"id": "dc9c28d1-c123-4c2d-85fb-cf9484978e50",
"tags": null
}
]
},
"workload_status": "GET_COMPLETE",
"workload_id": ""
}

 

Then I went back to the original query, and it worked ok, returning:

{
"template_type": "HEAT",
"workload_status_reason": "succeed",
"workload_status": "UPDATE_COMPLETE",
"workload_id": "dc9c28d1-c123-4c2d-85fb-cf9484978e50"
}