Hi,
Please check whether the field LIFNR is maintained as mandatory entry for the movement type in OMJJ - field selection (enjoy) or in OLMB - Settings for Enjoy Transactions - Settings for Goods Movements (MIGO) - Field Selection per Mvt Type. If so, maintain it as optional and test the scenario again.
Let us know the message number if the system still throws the message.
Regards,
AKPT