Pricing: Pricing procedure missing

What causes this issue?

A series of data, including the pricing procedure, is required to
create a pricing document. However, this was not provided when pricing
was called.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.