Extending Microsoft Dynamics 365 Finance and Supply Chain Management Cookbook - Second Edition

Extensibility in base enums

There are two notable limitations when an enum is created as extensible.

One is that we can't use it in conjunction with the mandatory property on fields in order to force a user to select a value. The first element is probably zero (which is not valid for mandatory fields), and will usually work—we can't guarantee this behavior and must not use this technique.

The other limitation when using comparisons on enums is using relative comparisons, such as greater than. For example, the options for the SalesStatus base enum are as follows:

• None
• Backorder
• Delivered
• Invoiced
• Canceled

This enum was changed from a standard to an extensible enum in an early application update. Prior to the update, the following code would ...