1887387 - Error message IM002 or C1155 is issued by BAPI or IDoc although functional location exists

You get error message IM002 "Functional location & does not exist" or C1155 "Object & (IFLOT ) not found" issued from BAPI or IDoc, although the functional location exists in the system.

As of SAP R/3 4.5 

IM 002, C1 155, CLFMAS, CLFMAS02, IFLOT, OBTAB, OBJEK, KLART, 003, E1OCLFM, BAPI_ALM_NOTIF_CREATE, NOTIFHEADER-FUNCT_LOC , NOTIFHEADER, FUNCT_LOC, BAPI_ALM_ORDER_MAINTAIN, STRNO, TPLMA, OIPU, Alternative functional location label, Functional location does not exist, Object not found , KBA , PM-EQM-FL , Functional Locations , How To