I did a step over the function module BAPI_PO_CHANGE and it failed: [dump smart debugger.zip](https://github.com/user-attachments/files/22623679/dump.smart.debugger.zip) Possibly comparing a string and an internal table: <img width="706" height="707" alt="Image" src="https://github.com/user-attachments/assets/f337d8ef-c35b-44ae-9c74-063a1dce3bc4" /> <img width="705" height="763" alt="Image" src="https://github.com/user-attachments/assets/c3629688-72d9-4ec8-ad21-8a42b7050bfc" /> <img width="697" height="199" alt="Image" src="https://github.com/user-attachments/assets/86b91ab2-9067-4151-956a-219132a285cb" />