When trying to access existing application in ADSA it returns error message:
DC450102 Application xxxxxxxx version nnn does not exist; select ADD to create
Make sure you are set to the correct DICTNAME where the application resides.
If you are set to a LOADLIST that is not SYSLOAD, be sure it contains an entry for the DICTNAME where the application resides or an entry that will use the DICTNAME the user has set by DCUF or PROFILE.
If the application is defined as a PROGRAM in the SYSGEN be sure that it is defined as DYNAMIC. This is especially important if the application resides in a dictionary that is not the default dictionary. If it is NODYNAMIC then it needs to be changed to DYNAMIC and the system re-generated.
Another possible problem is that the program is disabled. Do a DCMT D PRO appl_name
If it is disabled and out of service do a DCMT V PRO appl_name ENABLE to re-anable it.