Debtors error problem

Hi… I made a new Journal Entry for Payment to our Customer “Debtors”, but when I try to Submit the document this error is showing, please check photo.
Please advise the possible cause and solution.

Please check general ledger report for outstanding amount of the customer. Is it really 519477? Then the validation is correct, you need to increase the credit limit.

Thank you Sir:slightly_smiling_face: