3554981 - Manually entered FM Account Assignment not being considered in MIGO

In transaction MIGO, the system does not recognize the manually entered FMAA (e.g Funds Center). 

The FMAA field appears empty ignoring the manually entered one or a different one is derived through FMDERIVE even when derivation rule is set to "not overwrite if field already filled".

Sometimes, you can also notice that this happens for certain Movement Types.

"Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

You are using MM - FM integration

MIGO, Goods Issue, Goods Receipt,  FMDERIVE,  account assignment, OMWN, PSM, MM. , KBA , PSM-FM-UP-FI-GR , Goods Receipt Reduction , MM-IM-GF , Basic Functions , Problem