In Material replication alternative Unit not replcated to SRM

Hi Experts,

We have a issue in SRM 7.0. We have replicated some products from ERP to SRM, for some material Alternative unit is replicated and we can use that UOM for creation contracts and SC. But for some materials this alternative unit is not replicated. When we made changes to these materials, replication failed in Bdocs with Below Error.

1.Order unit T is not assigned to this product(For some materials already this Unit got replicated)

2. Validation error occurred: Module COM_PRODUCT_MAT_VALIDATE, BDoc type PRODUCT_MAT.

Please help me to find out the issue.

Thanks in Advance,

BR,

Basu