FRM-40200: Cannot Unfreeze Descriptive Flexfield

FRM-40200: Field is protected against update


follow these steps:

# Select Application Developer responsibility
# Navigate to Flexfield, Descriptive, Register
# Query the flexfield
 
  There you will see that the protected flag is checked.
  Uncheck and save.


Try and unfreeze the flexfield again.

Do you want to save changes in oracle forms

After I query the record and closing the form the error 'Do you want to save changes you have made' will appear without entering or modifying records in the form. So how can I avoid this message?

I defaulting some value for non-database item in Post Query trigger, which causes this message.

Finally used below code in Post Query trigger and worked. 

set_record_property(:system.trigger_record,:system.trigger_block,status,query_status);