Analysis StructuredData error
# supportj
Jothar73
03/02/2026, 11:52 PMAll of our agents structured data output is failing with anthropic & bedrock errors. We do not specify the LLM for the structured data plan, but we do have a schema passed to it.
Example call ID: 019cb0ea-a6bb-722d-a9ef-fa91582ddf1c
Timestamp: ongoing, but from the example: Mar 02, 15:38:18.257 PST
Response Expected: structured data output
Response received: "N/A" with errors in the call logs
JSON from the call log:
{
"id": "log-1048",
"level": 50,
"time": 1772494937269,
"timestamp": 1772494937269000000,
"severityText": "ERROR",
"severityNumber": 17,
"body": "Analysis StructuredData error",
"attributes": {
"category": "system",
"callId": "019cb0ea-a6bb-722d-a9ef-fa91582ddf1c",
"orgId": "f1dd79b2-4b8f-4897-a836-723dd0aa1366",
"provider": "unknown",
"error": {
"message": "All model completion attempts failed. Last error: TypeError: Cannot read properties of undefined (reading '0')"
},
"metrics": {
"latencyMs": 33512
}
}
}
https://cdn.discordapp.com/attachments/1478178279453098004/1478178280396820521/s-log.png?ex=69a7744d&is=69a622cd&hm=3aa67d5808dcc4a50ecfef64d8913137354c8e9453548161dd508c331c270f16&
https://cdn.discordapp.com/attachments/1478178279453098004/1478178281223229521/s-output.png?ex=69a7744d&is=69a622cd&hm=3d65da5c4c4f39f3caf4e6bf5c881e026546fedd6a015f1d79b472caa6ece688&
j
James Christopher
03/03/2026, 7:06 AMThanks for sharing the logs, that helps a lot. It looks like the structured data step doesn’t have an explicit LLM assigned, so VAPI is falling back to Anthropic/Bedrock, and the response isn’t returning valid structured JSON. That’s why you’re seeing “N/A” and the undefined error. I’d recommend explicitly setting the model for the structured data plan and confirming it supports schema/JSON output. Were you expecting it to use a specific model, or relying on the default fallback behavior?
@Jothar73
c
Chiranjeet Mishra
03/09/2026, 6:39 AMHi,
Root cause: When no custom LLM was specified for the analysis plan, model resolution returned
undefined