nits

mapper/pchain/tx_parser.go

@@ -768,7 +768,11 @@ func (t *TxParser) isMultisig(utxoid avax.UTXOID) (bool, error) {
 		// Consider the UTXO as multisig if it is not found in the dependency tx.
 		// Possible for dependency txs like [DisableL1ValidatorTx] or [SetL1ValidatorWeightTx].
 		// These unfound UTXOs are generated by the network but are not included in the tx bytes.
-		return true, nil
+		switch dependencyTx.Tx.Unsigned.(type) {
+		case *txs.DisableL1ValidatorTx, *txs.SetL1ValidatorWeightTx:
+			return true, nil
+		}
+		return false, errFailedToCheckMultisig
 	}
 
 	addressable, ok := utxo.Out.(avax.Addressable)