For X.509-based identities, these identifiers are pairs of strings that are known as Subject Key Identifier (SKI) and Authority Key Identifier (AKI), and are checked whenever the X.509 certificate is being used to make sure that the certificate has not been revoked. See this topic in the Fabric documentation for more information about [Certificate Revocation Lists](https://hyperledger-fabric-ca.readthedocs.io/en/release-1.4/users-guide.html?highlight=revocation%20listrevoking-a-certificate-or-identity).



For example, your JSON file would look similar to:

{
"name": "org1msp",
"display_name": "org1msp",
"msp_id": "org1msp",
"type": "msp",
"admins": [
"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"
],
"root_certs": [
"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"
],
"intermediate_certs": [],
"tls_root_certs": [
"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"
],
"tls_intermediate_certs": [],
"fabric_node_ous": {
"admin_ou_identifier": {
"certificate": "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",
"organizational_unit_identifier": "admin"
},
"client_ou_identifier": {
"certificate": "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",
"organizational_unit_identifier": "client"
},
"enable": true,
"orderer_ou_identifier": {
"certificate": "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",
"organizational_unit_identifier": "orderer"
},
"peer_ou_identifier": {
"certificate": "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",
"organizational_unit_identifier": "peer"
}
},