Prevent upload of prices for materials not extended to Sales org

Hi SAP GURU'S

Can any one suggest me on below.

When we are updating condition records for material (xyzxyz) in VK11 system allows us to update irrespective of sales org.

For ex:XYZXYZ material is extended only for 3 sales org's (0001,0002,0003).we have two more( 0005,0006) sales org too.

but material xyzxyz is not extended on these two.but we can maintain PRICING record in VK11 for same material with not extend sales org(0004,0005)

My requirement is system should give error message while updating pricing records in VK11 for xyzxyz with sales org. (0004,0005) which are not extended by material.

Your suggestions are highly appreciated.

Regards,

Naveen