On a form published to a form library with one external receive data connection, I get an access denied error whenever the submit button is clicked. The thing is the form is successfully submitted and saved.
I've checked permissions and have given the end users FULL CONTROL of the entire site collection to in order to try to stop the error but to no avail.
The permissions are set like this:
Form Library - Everyone (entire tenant) has Contribute without delete (custom permission)
Workflow on item creation - removes contribute without delete from everyone group and adds Contribute without Delete back to the item.
I have used the same permissions on different form and workflow systems before and never had this problem.
I've checked the external data connection (which is a list with usernames in order to match the username on form load) and the permissions are correct there as well).
Has anyone ever experienced this?
It's becoming an annoying issue for the SMT's!