Error When Create SES

Dear FM Gurus,

Currently, i am working in Fund Management with integration to Material Management. I make configuration in OFUP as shown below.

i create PO Asset with Account Assignment A and Item category D (Services). Budget has been consumed as Commitment, but when i create SES through ML81N, i got error message RC 3 SE 509 Account assignment for entry sheet $ missing as shown below:

Please help.

Regards,

Angga Saputa