SAP Message 3Q121 - on feature 27IRF/G, if used "R160N", /160 can't be use for rental/OS adj

Diagnosis
In feature "27IRF" and "27IRG", in the case of "R160N" is used, you
should not apply wage type '/160' in the lines beginning with "EE" or
"ER" or "O" for rental allowance or overseas allowance adjustment.

Procedure
Use wage type '/147' or '/148' or '/149' as the rental allowance or
overseas allowance adjustment wage type.