Block transaction in A/R Reserve Invoice via Stored Procedure

Dear experts,

I found in many threads the object id or object type of A/R Reserve Invoice to be 13 which is same as A/R Invoice. But when I use this object id in SP_Transaction_Notification stored procedure to block a transaction, A/R Reserve Invoice document is not affected by this object id. Also I noticed that the table the A/R Reserve Invoice is using is same as A/R Invoice.

Can any one help on this issue?

I want to block transaction to A/R Reserve Invoice as well as A/P Reserve Invoice if the line item's Item cost (OITM.AvgPrice) field is not specified in the Item Master Data.

Regards

Sanil