What is SPAU .
SPAU – The adjustment of Repository objects is carried out with transaction SPAU. Only those objects that have been modified by you and are being redelivered by SAP in an upgrade are presented for adjustment. If the objects you modified are not being delivered by SAP with the current upgrade, then they do not appear in the display.
The system automatically recognizes during upgrade if modification adjustment is necessary. You are then prompted to perform the modification adjustment.
You must decide whether the objects contained in the adjustment list should retain your modifications or if they should be reset to original. This is mandatory and must be carried out for each object visible in the adjustment transaction. Otherwise, the new original stays active in your System. The objects continue to be displayed in SPAU as not adjusted.