Purchasing document type cannot be determined for purchase requisition

What causes this issue?

The system cannot determine a purchasing document type for the purchase
requisition.

System Response

The system could <ZH>not</> create the purchase requisition in the OLTP
system.

How to fix this error?

In the Customizing for purchasing, maintain a corresponding purchasing
document type.
If you have defined several purchasing document types for purchase
requisitions, you must also define a default document type for the
transaction <ZK>ME51</>. Maintain this in Customizing for purchasing
under <ZK>Define Default Values for Document Type</>.


Note
You can change the default purchasing document type before the creation
of a purchase requisition in the OLTP system by using the user exit
'EXIT_SAPLMEPI_003'.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.