This field is only filled in on outgoing intercompany transactions. It contains the IC G/L account that you suggest the amount will be posted to in your partner's company.
The field must be filled in on a line with a bank account or G/L account in either the Acc. No. field or the Bal. Account No. field.
If you have filled in the Default IC Partner G/L Acc. No field on the account card for the account in the Account No. field, the number has been automatically filled in by the program, but you can change it.