These are the three transaction code you can used for releasing the SAP credit management block.
VKM3 - Sales Order
VKM5 - Delivery Order
VKM4 - Both Sales Order and Delivery Order
Updated May 18, 2018
These are the three transaction code you can used for releasing the SAP credit management block.
VKM3 - Sales Order
VKM5 - Delivery Order
VKM4 - Both Sales Order and Delivery Order