Explanation/Reference:
Explanation:
State Based y default, endorsement policies are specified for a channel's chaincode at instantiation or upgrade time (that is, one endorsement policy covers all of the state associated with a chaincode).
However, there are cases where it may be necessary for a particular state (a particular key-value pair, in other words) to have a different endorsement policy. This state-based endorsement allows the default chaincode-level endorsement policies to be overridden by a different policy for the specified keys.
Reference: https://hyperledger-fabric.readthedocs.io/en/release-1.3/endorsement-policies.html