automatic batch classification error

Dears,

while doing GR, system creates batch automatically, i get the error (LOBM_VFDAT: Value "00.00.0000" not found).. this also happens when enter an expiry date for the batch..

LOBM_VFDAT is the characteristic for expiry date, so i am not supposed to put list of values, it could be any date... but it seems the system is asking to put values in CT04 for this characteristic..

any idea how to solve this?