Recurring form submission error


We continue to see this error on forms connected to a specific sheet, even with all inputs given, required or not:

The information you entered is incomplete or invalid.

Once the error has occurred on a form, it persists until "fixed". No one can submit new entries with that form, neither external users nor users in our account. For all intents and purposes, the form appears to be "broken".

The only "fix" we can find is to delete and recreate the faulty form. Sometimes the error occurs from the first submission attempt, and we recreate again.

We have 4 identical forms, except a hidden field with a unique default value in each form. They are all duplicates of the same unused "template" form.

The error has occurred in several of these forms since we created them six months ago. Quite frequently at first, not as frequently since.

The target sheet has another 2 forms, which are not duplicates of the same template form. We have never heard of the error in these.

Are we missing something obvious, or has anyone seen anything similar? I am happy to provide more details 🙂

Form characteristics

  • The forms have two hidden fields with default values. One is a Text/Number column with a unique value in each form. The other is a Dropdown (Single Select) column with the same selection in each form.
  • There is no form logic.

Sheet characteristics

  • 55 columns
  • 6,500 rows
  • 8 automations: 7 notifications, 1 "Copy a row"


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