Can I move my PM-KUSUM solar pump to another field or change the borewell later?

The solar pump is sanctioned and installed for the specific land and water source you applied with, and the agency verifies it at that site, so it is not meant to be freely shifted around. The panels in particular are fixed structures, and the system was sized for the head and bore of the original location, so moving it to a different field or a deeper bore can leave it mismatched and underperforming, besides raising questions during any inspection within the warranty and maintenance period. If your original bore fails and you genuinely need to shift to a replacement bore on the same holding, the right approach is to inform the nodal agency and the vendor rather than moving it quietly, because relocation may need their approval and the vendor's involvement to keep the warranty valid, and any rework on the mounting and piping is best done by the empanelled vendor. Shifting the asset to a completely different person or selling it within the obligation period is usually restricted, since it was given with subsidy for that beneficiary and site. So the safe answer is that minor shifts within your own holding may be possible with the agency and vendor's knowledge, but treat the pump as tied to its sanctioned site, and check the relocation and transfer rules with your state nodal agency before moving anything, since these conditions vary by state.