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# Additional fields added to Batch Subscribe error response

We’ve added “`field`” and “`field_message`” to the [Batch Subscribe](/developer/marketing/api/lists/batch-subscribe-or-unsubscribe) error response. You’ll see data in these fields when a merge field error is encountered.

Previously, when you encountered a merge field error during a Batch Subscribe operation, you didn’t see any details about the field in the error. This can cause headaches when you’re troubleshooting a remedy.

These additional fields, when present, should provide more insight into how to resolve an issue.