[USER STORY] Add a user to a blocklist

[JustusOrtlepp]

Story Title

As a DFSP, I want to add a Front-End User to a block list temporarily or until I decide to remove them, so that I can prevent the user from transacting through the Mojaloop Hub when they threaten the safety and security of the ecosystem or if the customer's account has been compromised.

Acceptance criteria

• [ ] If the user is already on the block list, inform the DFSP with the appropriate error message.

• [ ] If the user is not on the blocklist, the user is added to the blocklist and an appropriate message is returned to the DFSP.

• [ ] Verify that the user's entry in the blocklist contains a valid reason.

• [ ] Verify that the action is audit logged

• Verify that the user's status on the blocklist is one of the following:

• [ ] Indefinite (the user will remain on the blocklist until removed

• [ ] Limited (the user will remain on the blocklist for a specific duration; the time at which the block period will expire is also recorded on the blocklist)

• Verify that the user's block type on the blocklist is one of the following:

• [ ] Making payments

• [ ] Receiving payments

• [ ] Both making and receiving payments

• [ ] Total block on all Mojaloop Hub functions

[JustusOrtlepp]

Questions to resolve:

• [ ] List of valid block reason codes to be determined