No outbound profile exists for partner number '&', partner type '&'

What causes this issue?

An outbound partner profile could not be found with the following key
(table EDPO1):
Partner type: &v2&
Partner number: &v1&

How to fix this error?

Please check the outbound parameters of the partner profiles.
IF &DEVICE&='SCREEN'
<DS:TRAN.WE20>Execute function</>
ENDIF

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