Beginning in SAS 9.2 TS2M0, you can use the FCmp Function Editor to manage (delete, create, and more) the user-defined functions created in PROC FCMP. To access the FCmp Function Editor, use the Pmenus at the top of an interactive session of SAS. First you will click on Solutions, then Analysis, and then FCmp Function Editor. Here is the link to the documentation:

SAS 9.2 PROC FCmp Function Editor Documentation

Beginning in SAS 9.2 TS2M3, you can use the new DELETEFUNC statement with PROC FCMP to delete a user-defined function. Here is an example deleting the function AGE stored in the WORK library:

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