When the logic for avoiding duplicate schema nodes is applied the number discriminator is used to distinguish the two (or more) schemas. This can lead to not used schema at components/schemas/duplication-test_first as we see in https://git.opendaylight.org/gerrit/c/netconf/+/110406.

Here both RPC inputs duplication-test_test-rpc_input and duplication-test_test-rpc2_input are using components/schemas/duplication-test_first1.