Blanket Purchase Order and MIRO

[svendelangle]

when trying to post the invoice for a blanket purchase order (acc.type = U;Pos.Type = B) within transaction miro, the fields cost center and accounting are read-only and it's not possible to post the invoice.

Do you have any suggestions how to make those fields editable?

I tried every variant available, in all of them, the fields are read-only.

[svendelangle]

yes there is a screen variant available for 4_6310, but only for dynpro 6310, not for 6410. Nevertheless i'm not able to specify accounting information on both screens.