Hi, 

i have problem with these situation, in Forms i have Field A as dropdownw list which i populate from database table, and the same field A exist in my template (index card), in my template too i populate it  from database, and i have workflow which create document with metadata (field A includ) and the user should scan the content in the same document, when i try to scan i have this error, the error mention datetime, but when i stop to populate my field A in my template, the error was not appear

in my template, Field A has type text, and i populate it from external table