One of my transactions appears as 'Reserved'. What does it mean?

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Viva Payments provides a completely secure trading environment for all its customers through strict compliance with all guidelines and regulations imposed by international organisations.
Due to these regulations, a transaction may be put on hold after it is completed.
This means that additional investigation by the suspicious transactions department is required.
In all cases you will receive email notification, or one of our representatives may even contact you directly by telephone.
Please be advised that, based on the terms of use of the service, you are required to retain details of your customers, as well as of the transactions made through Viva Payments.