The remote device requested in the create pair action is already an RDF dev

You don't indicate what the mistake was. If you had the wrong device pairings, then you want to delete the erroneous pair. If both src and target are already RDF, then use "symrdf deletepair". If only one device became an RDF device, then you can use "symrdf half_deletepair". (I think the half_deletepair option came out in solutions enabler 6.3).

Note, part of the createpair process tells the software to mark all the source tracks or all the target tracks as invalid. Most typically, people choose to invalidate all the new R2 data (either with "symrdf createpair -establish" or "symrdf createpair -invalidate R2".