Troubleshooting
| Error | Cause | Fix |
|---|---|---|
| No inference API is accessible for model | Model access not enabled or IAM permission missing | Enable model access in Bedrock console; verify IAM policy includes bedrock:InvokeModelWithResponseStream |
| Input file is empty | S3 object has 0 bytes | Verify the input JSONL file has content |
| File is not valid JSONL | Malformed JSON in input file | Validate each line is valid JSON |
| AccessDenied on S3 | IAM role lacks S3 permissions | Add s3:GetObject for input path and s3:PutObject for output path |
| ValidationException: multiple evaluation methods | Provided both steeringCriteria AND customLLMJConfig or Lambda |
Use only ONE evaluation method per template |
| ValidationException: missing label | Missing customEvaluationMetricLabel when using LLMJ or Lambda |
Add the customEvaluationMetricLabel field |
| Silent failure: inputVariables | Multiple keys in one inputVariables object |
Use one key per object in the array |
| ValidationException: placeholder mismatch | inputVariables keys don't match {{placeholders}} in template |
Ensure keys exactly match placeholder names |
| ValidationException: wrong bracket syntax | Used {variable} instead of {{variable}} |
Use double curly brackets |
