Separation of storage loc. region wise customers

Dear SAP Guru,

I have a requirement from the business that an article to be kept in 2 storage locations. While processing the sales for 2 different region's customer storage locations should pic separately for both the customer.

For example: If an article XXXXXXXX is kept in storage location aaaa and yyyy. There is a customer C exist in region 01 and customer D exist in region 02 and while processing sales for customer C storage location should pic as aaaa and for customer D storage location should pic as yyyy.

Please do suggest with valuable inputs for the same.

Thanks in advanced.

Regards,