AFAB:AA776 "Create document number range ## using internal number assignmen

Good afternoon

I ask for your guidance to see if anyone knows me that is generating errors in the transaction AFAB AA776 "Create document number range ## using internal number assignment", the peculiarity of this is that I'm in an environment that is proving to migrate V5 to V6 ranges in environment QAS is marked as external and no problems to run on v6 change in SAP itself. Test by removing the flag marking for external control and run, causing an alarm is that it does not work as in my QAS v 5 and that I should remove this flag is removed and remove it in all the years this range of numbers is that it can hurt if you make this change.

Can anyone guide me please.

Thanks for the support.

good day