Error scheduling background job & in client &

What causes this issue?

A system error occurred scheduling the transport dispatcher program
<DS:RE.RDDIMPDP>RDDIMPDP</> as background job &V1& in client &V2&.

System Response

The program could not be scheduled.

How to fix this error?

Log on to client &V2& as user DDIC and run the ABAP program RDDNEWPP in
the initial screen of the ABAP editor (<LS>Tools -> ABAP Workbench ->
Development -> ABAP Editor</>) The standard password for user DDIC is
'19920706'.
If RDDNEWPP does not report an error, the error has been removed.
If client &V2& is a client newly created by a client copy run and user
DDIC does not exist there, create user DDIC in client &V2&. This can be
done, for example, by copying the user master data from a suitable
source client. Then try to run program RDDNEWPP.
If the first two steps are not successful, look in the system log for
more information (<LS>Tools -> Administration -> Monitoring -> System
log</>)
If an error is reported by the lock administration diagnosis (<LS>Tools
-> Administration -> Monitor -> Lock entries -> Extras -> Diagnosis
</>) this may have caused the error that occurred.
Try to schedule program RDDIMPDP in the initial ABAP Editor screen as a
background job to be executed immediately (<LS>Program -> Execute ->
Background</>). Although this will not remove the error, it could give
you further information about the cause.
If you can access the SAPNet - R/3 Frontend, search for the keyword
'PU007'.

Error message extract from SAP system. Copyright SAP SE.