Dear Aussie
Yes, it is possible to perform YE on some modules and not others, however, this is not recommended (and I am sure your Accountant would support this statement).
Especially you should not perform your YE on Ledger if your other subledger modules have not been completed for the year!
If this relates to your previous posting regarding AR not letting you continue with the YE process even though you did print and clear the posting journals - then you should have an answer to that already.
If our suggestion did not help, then please post another reply - you should definitely not proceed with the YE closing of Ledger until all your other modules have been completed successfully and you are satisfied with the results!
Regards
Softrak Support