A customer can have various statuses. Below is an overview of what each status means.


ActiveThe customer can be used.
Warning
If the customer is used on a contract, a warning is shown. This warning does not block the customer.
BlockedIf the customer is used on a contract, a warning is shown. This warning blocks the customer. 
InactiveIf the client is set to inactive, the customer will not be found in the search.