Batch split while creating ASN in SNC web UI

Hi Friends,

I am having scenario as follows:

Initial Data:

Material is batch managed - ECC

Product master is batch manager- SNC

Validation check - ASN_CHECK_BATCH_NUMBER_REQ - is active in SNC

Step 1 - PO created in ECC with quantity 100 for above material - single line item

Step 2 - PO published in ECC with quantity 100 to SNC

Step 3 - PO confirmed in SNC

Step 4 - PO confirmation received in ECC

Step 5 - ASN creating in SNC - during this step vendor is sending me material in two batches (supplier batch 1 and supplier batch 2) -- HOW DO I DO                 THIS in WEB UI 

I have functionality of batch split in inbound delivery for match managed materials and can enter vendor batch while splitting delivery quantity in batch split activity.

I have following two requirements:

1- Validation in SNC web UI for supplier batch field

2- Splitting the ASN quantity in batches (supplier batch)

Have any one face this scenario please help.

Regards,

Vinod