> #### 5.4.7 Define the set of user-defined process attributes

> User-defined process attributes (UDAs) are variables, which hold values in a running process instance, set by the user through the use of a form, script, or JavaAction. For example, a purchase requisition process might have a user-defined process attribute called "Cost," which the user sets by filling in a form.

> Note: UDAs of type STRING cannot have values that are bigger than 64 KB.
> UDAs can be defined only when creating or editing a process definition.
> The Attributes, Cubes, and Aggregates columns of the Data Items Table in the UDAs frame are only used with ARIS PPM. If you are not using ARIS PPM, you can ignore these columns. If you are using ARIS PPM, see the ARIS PPM documentation.

> ###### To specify the set of UDA attributes:

> 1. Display the process definition or process instance.

> 2. Select the Properties button.

> 3. Select the User Defined Attributes tab.

> 4. Click Add.

> 5. Modify the name of the user-defined process attribute as needed.

> 6. Select the data type of the user-defined process attribute from the drop-down list.

> 7. Modify the value in the Data Item Initial Value, if appropriate.

> 8. Repeat Steps 4 to 7 for each user-defined process attribute.

> 9. For the last field modified, press the <Enter> key or click another field so that the change is accepted

> 10. Click OK.

> ###### To delete UDA attributes:

> 1. Select the items to delete. Use the <Shift> or <Control> keys to select multiple items.

> 2. Click Delete Selected.

> 3. Click OK.

> If you would like to have a record of the changes made to a particular UDA's value, you can track it by checking its Trackable checkbox. For detailed instructions, see the next section, UDA Tracking.

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