5035 - Required WB_UID member field <field name> missing! Unable to identify record!

This error is generated when WB_UID is defined and user tries to add, update or delete record but does not provide a value for all fields defined in WB_UID.
When WB_UID is defined none of the form fields (WBF_Fields) used in WB_UID variable cannot be left empty when executing add, update or delete command.