Volume mapping errors can be displayed when starting replication, that is attaching the Primary RLINKs.
Configuration checks for volume mappings are as follows:
Make sure that for each data volume that is associated with the Primary RVG, there is a corresponding Secondary volume associated with the Secondary RVG.
Make sure that the size of each Secondary data volume is the same as the corresponding Primary data volume. The sizes should be the same in sectors or bytes. You can find the size of the volume in sectors using the Storage Foundation. To do this, select the volume and right-click. Select Properties > Size in Sectors to view the size of the volume in sectors. Alternatively, you can also run the following command from the command prompt:
vxvol volinfo <volume name or drive letter>