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    Prerequisites for MLE
    Before enabling message-level encryption (MLE), you must complete these requirements:
- Sign the pilot agreement for using MLE.
 - Confirm that the APIs you are integrating to support MLE.
 - Retrieve theNational Australia Bankpublic key from either the Account Manager or Client Executive services in theGateway Portal.
 - Ensure that your system is configured to read the public key and encrypt the API payload.