7543 – Unable to post final invoice (billing document)

Issue Summary: [7543] Unable to post final invoice due to missing G/L account in chart of accounts, causing revenue account mapping issue.

Resolution / Workaround: The root cause was identified as a missing account assignment group value in the customer master data. The automatic account assignment for cases when this field value is empty was updated by Amelia, ensuring that the revenue account goes to the correct G/L account according to the relative product.