Purchasing organization & not allowed for plant &

What causes this issue?

This <GL:purchasing_organization>purchasing organization</> has not
been defined for the specified <GL:plant>plant</>.

How to fix this error?

Determine which purchasing organizations are responsible for the plant.
Contact your system administrator if the list of responsible purchasing
organizations for a plant needs to be changed.
IF &DEVICE& = 'SCREEN'
<DS:SIMG.SIMG_CFMENUSAPCOX17>Assign purchasing organization to plant</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.