In case you are not able to open File Aid in Edit mode, try doing this……………………..
Open your file Aid with option 2 for Edit, you will get below screen. Now in the bottom of the screenshot there is a option “IMS log dataset usage” with indicator ‘N’.
Change the Indicator value from ‘N’ to ‘AD’ or ‘AK’. Now you will be able to edit the database.
‘AK’: If you want to have the log file available to backout your changes.
‘AD’: If you don’t want to have the log file.