So we got it figured out: It appears that the LUNs on the XIO side need to be the exact same size in KB as the source LUNs on the VMAX. Set those up and it worked great! Thank you all for your input
We are in the process of moving off of our VMAX 20K onto a new XtremIO 40TB array.  For some of our bigger SQL clusters and other physical systems we were planning on using Recoverpoint to do the migration of those LUNs all within the same RPA Cluster.  We have everything setup and licenses for both local and remote of our XIO, but for some reason, RPA will not see the XIO target LUNs.  has anyone experienced this?  Any gotchas on moving data from VMAX to XIO using RPA?    Thanks in advance....  Jim
Replicating Data between VMAX 20K & XtremIO?