This message occurs when an account has been used in your GL Batch that is not in your accounting system, e.g. Sage 300 or there is a blank line in the batch.
To resolve the error:
Review Ledger Account in the General Ledger Batch Process grid, and look for either a blank or an invalid Ledger Account. You will need to compare the accounts to those set up in your Accounting system.
Once you find the cause, go to General Ledger Integration, Maintenance, Batches, Batches and Edit the batch with the error.
Select the Details tab and Edit the detail line causing the error. Update the Ledger Account to a valid Ledger Account.
Click OK to save the detail line and OK again to save the batch.
Go back to General Ledger Integration, Transactions, Batch Process. Enter the same required parameters, tick Clear Previous Unposted Batch and click Process.
Review the Batch and, if correct, click Transfer to Accounting.
Tip: If you don't know which Detail Line has the incorrect Ledger Account, use IQGL-BDM - GL Batch Details Maintenance in Common, IQ. You can run this for the Batch and use filters to locate the invalid Ledger Account.