Using v15EE

Need to state upfront I am not an accountant so terminology might not be correct but will try explain best I can...

We have a customer account with a large number of transactions and we have landed with a situation where we have a discrepancy while trying to reconcile the account with the customer. More specifically we have a payment (on bank statement) for example $50000 but only have invoices for $49k. The invoices and credit notes etc. are all correct.

In order to reconcile to the full amount on the bank statement and have it reflect on the customer statement we need to have an additional miscellaneous matching line to validate the reconciliation.

I have tried to posting a manual journal and then selecting that journal as a misc matching entry and this works but the reconciliated amount (payment amount) is only reflected on the customer statement as  $49k

What manual journal do I need to create for the $1k so that I can reconsolidate it to the $50k bank statement line and that it appears on the customer statement as "Reconciliation Correction" $1k and the full bank statement payment line of $50K?

Hope this makes sense ...