There are two kinds of suspensions which are supported in the system currently. depending on the state passed as part of the request the behavior changes.
Suspended
disable all resources of the user which includes the generation of the security token. This will also invalidate all active access associated to the user. If the card has been already pre-validated by a merchant, an authorization can still be made.
Blocked
will suspend the account and block all cards associated to the user. The blocked cards will disable all transaction made by that card, and all purchase authorization.
Note
An account with cards or payment account with pending settlements cannot be closed. You are recommended to first suspend the account and wait for pending settlements before blocking