Error message No AA590 in tx AIBU/ AuC Settlement

Dear Gurus,

We are using transaction AIBU, when we try to settle an AuC to a finished Asset we get Error message No AA590.

We checked configuration AO75 and didnt see anything wrong, we are working with version S/4 HANA 1611:

S4CORE / 101 / 0002 / SAPK-10102INS4CORE / S4CORE