Hello ozcamman 

Thank you for your post. 

The first thing to try when getting a something went wrong message is to clear the browser cache and to try a different browser as it can assist with resolving the error.

You will also be able to try these things to see if you are able to access the credit this way:

1. Check if the transaction is reconciled and has payment associated with it and first undo reconciliation and delete the payment - Now try to delete the transaction

2.. Open the transaction from the “Find Transaction” tab and try to delete it

3. Open the transaction from the “General Ledger” report and try to delete it

Please let me know how you go.