MIRO is not blocking for price difference for MRBR

Hi Gurus,

I have one query regarding, we have price difference between po value and invoice value system is throwing error for blocking of invoice i have checked configuration OMR6 PP and activated 'R' manual block check box

whiel creating MIRO i am maintaind GL code in the column of GL account but system is checking already maintained PRD GL and system is not allowing to block the invoice for posting.

Can please advice i missed any cofiguration for this concept?

Thanks for your advance help.

Thanks & Regards,

Srinivas.