https://tx.mb21.co.uk/
mb21 - The Transmission Gallery
transmissiongallery
https://userapps.support.sap.com/sap/support/knowledge/en/3736490
3736490 - MB21 Reservation: Cost Center Can Be Maintained Only at Header Level SAP ECC and S/4HANA....
In transaction MB21, the cost center is maintained at the reservation header level. Clarification is requested whether the cost center can be maintained at...