Hi Nagaraj,
The error is seen because the EXOS images are installed in different partitions of master and the node which you are trying to synchronise. (For example, master booted with primary partition and the new switch booted with secondary partition). During the sync, the XOS image will also be synchronised with the target switch. So, it is necessary that the partitions are same.
To overcome this situation, please try to download and install the same image to the new switch in the partition same as the master's.
Command:
download image