https://userapps.support.sap.com/sap/support/knowledge/en/3806935
3806935 - Error seen : BRFplus application not maintained for class SD01 | SAP Knowledge Base...
We are encountering error FARR_RAI621 – "BRFplus application not maintained for class SD01" during RAR Inbound Processing for SD order items.
knowledge baseerrorseenbrfplusapplication