Create Account - Cannot specify ID in an insert call
There are two possibilities for this error. Both Resolutions are listed below.
This issue is caused by using a URL to prefill the Account ID of the first repeatable section and expecting the Account ID to prefill into the repeatable sections whenever a respondent selects to repeat the section.
To resolve this error, you'll need to either add in a prefill connector to prefill successive Account ID fields or pull the Account ID field out of the repeatable section so that the connector lookups can reference a constant field.
This can also be cause by the record ID field being mapped in the Submit Connector. Remove the record ID mapping from the Submit Connector as you cannot map a record ID in the field mapping section on the Submit Connector. You can use it in a lookup, but not in the field mapping.