Automatic deletion of Line item at GR level

Hi All,

I have a requirement,

The client will hire security service from the vendor, they will create service PO with 12line item and each line item cost will distribute to 5 cost center. they want a report which shows the pending quantity month wise for which month its has been delivered and pending.

So we create a Service PO with 12 line items for one year each line item will be delivered every month and service period is defined at PO level for each line item and each line item cost is distribute to 5 cost center. we are able to achieve the Report as per the client requirement.

The issue is at GR level, we can see 60 line item as we defined each line item cost is distributed to five cost center at PO level.

and we have remove 55 line item manually in GR level to receive one line item qty.

So is their any option where, we can get the line item based on the Date which we have provided at PO level.

NOTE: Client do not want from Contract process.

Thanks & Regards

Afsar