New Post: UpdateListItems required permissions to add items

Thanks for the quick response sympmarc, going over it again I'm thinking the permission assignments for the Members group are the issue. I created the custom Fake permissions level for testing purposes, the additional permission levels were assigned by default when I first picked up this project. I'm guessing the Read and View Only permission-level assignments may be what are preventing Members from committing new form information to my custom list. I won't get a chance to test it until this afternoon, but I'll try removing those permission-level assignments and the Managed Lists setting in the Fake and see if that allows Members to update the list.

Member Group Permissions Assignments


Custom Fake Permission Settings