Determination of packaging specification in the work centre

Hi EWM Gurus,

I have customized the Inbound process with packing using Quantity Classification.

customizing details:-

1. Packspec -

2. Putaway strategies -

1011 - quanity classification  1(EA) - storage type  a

1011 - quantity classification 4(PAL)- storage type b

Issue: - packaging specification is not getting determined at the packing work centre(external step - VS02).

Due to which system is not creating the desired handling units (as per the packaging specification).

Please let me know what could be the missing customizing here ?

Regards,

Ankush