Should I buy or let go off this property because of this small error? Is this something that may have future problems?

Q: We have shortlisted a property which has a small error.

The survey no. taken by the local authority for the land’s western boundary (which is towards the neighboring land’s compound) is different from the survey no. taken BMRDA. In other words, the local authority has taken the survey no. of the western boundary of the concerned land as 2, while the BMRDA authority has taken it as 5 (as the land bearing the schedule no. 5 is just beside the land bearing the survey no.2)

The khata made by the seller is as per the BMRDA survey no. though. When the same was mentioned to be rectified to the buyer, he states that the rectification shall cost him a huge amount. Other than this, the property has no other issue.

Kindly let me know if we can still pick up this property or not? Will there be any issues in future because of this geographical error?