Hi Galen,
I have seen this error indicate the edit against the feature cannot be completed, so the edit operation is rolled back. In Jonathan's case, I guessed that the field bindings were invalid with the question/response being submitted.
For example, you can have a 'text' question, which by default would create a string field with 255 length. If you manually set the esri field bindings, you could instead make the underlying field 'integer' or reduce the length. This would then cause an issue if submitting text/string responses. They can't be completed - as text input is not valid for an integer field - and the edit operation that occurs on survey submission gets rolled back. For more information and an example please see:
https://support.esri.com/en/technical-article/000022634
As this thread is completed I would recommend creating a new post to gather more viewers and then include the below as well as what other context can be provided:
- Survey123 version
- XLSForm
- Publishing context (is it a new survey, or are you republishing)
- Steps to cause the issue (i.e. is it a specific question or workflow)
There could be other reasons why this issue is occurring. For example, new Survey123 Connect form (v 3.13) on an older version of Survey123 Field app, where the new question formats are not supported.
Cheers,
Chris