iDoc not allow to process even after maintain message in OBA5

Dear Experts,

I have found the error message from iDoc Message no. KI211 and tried to maintain message in OBA5 and re-process in BD87

but the system still not allow to post. The same error message still appear KI211.

Kindly advice the solution to post this iDoc to FI

Note: I have also tried to manually amend the error message from iDoc status 51 to 64 (ready to be transferred to application)

Thank you very much and Best Regards,

Anne