Hi,
/127 Annual Perquisite wage type is generated in pcr IN70 based on processing class 70 & cumulation class 27 of various perk wage types:
One of the input for IN70 is /3RB -perk value housing.
Check the log of PCR IN70 (input table IT & output table). Also check the processing class 70 of perk wage types (should be 1) and cumulation class 27 (tick).
For generation of /3RB, check the log of INHRA function.
regards,
Bala.