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Microsoft Dynamics AX 2012 Services
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In this demonstration, we will create a SysOperation service that detects members with overdue rentals. These members will get the status "blocked" by setting a checkbox on the member in the database.
The dialog for the service will look like the following screenshot:

As you can see, a query enables you to select the members for which the rentals should be checked. By enabling the checkbox, you can override the number of overdue days that are allowed before a member is blocked.
The SysOperation framework uses services to execute business logic, so you have already learned most of the skills needed in Chapter 4, Custom Services.
We will create a new data contract, but because we have already demonstrated the creation of a data contract in the earlier chapters, we can be briefer here. The data contract that we'll make will have three members:
parmNumberOfOverdueDays: Holds the value for the number of overdue days that are allowed.parmOverrideNumOfDays...
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