I will explain my case:
I my journal templates (Gen. Journal) when i enter multiple lines such that suppose two lines sum up with zero (credit + debit) the following lines series no. increases automatically, which i do not want. (how to fix the no series even the previous journal lines form a complete journal (sum zero),
The message comes when i change the no. of lines to one series no. such that Debit and credit parties are in different store codes.
If i keep it as it is (increasing) the posting is ok.