Sequence number already used

When I open a new line in the payment journal I keep getting a sequence number that has already been used (and posted). Any ideas on how to correct this problem, and/or what triggers this problem ? Thanks, Vilma

have you deleted soma journals and later cleaned the journal series? Regards, Anuj

Yes, whenever we have problems with the numbers assigned we go and delete the list of journals in the sequence number files. Is this not a valid procedure? Thanks, Vilma