Visual Identifiers
When you create a filter you will need to decide on the set of visual identifiers. These identifiers allow the user to identify and filter individual business object instances.
When you manage instance lists with the List Manager you use parameters named VisualID1 and VisualID2 to specify (or receive) the visual identifiers assigned to a business object instance.
Both parameters are alphanumeric and have maximum lengths of 32 and 50 characters respectively. You can of course put anything you like into these visual identifiers, including numeric and concatenated information. The Framework Manager provides a standard method named avMakeAlphaValue to help you convert numeric identifiers such as Product and Customer numbers into alphanumeric form.
Here are some examples of visual identifiers:
| Business Object | Chosen VisualID1 | Chosen VisualID2 |
| Product |
Product Number |
Product Description |
| Customer |
Customer Id |
Customer Name |
| Employee |
Employee Number |
Employee Name ( Department - Work Phone Number ) |
| Account |
Company Id : Account Number |
Account Name |
| Department |
Department Name |
Not Required |
| Section |
Department Code – Section Code |
Section Name |
Remember that visual identifiers are only used so that people can identify things and that they have no bearing whatsoever on how your programs will identify things. You might even dynamically vary the visual identifiers used from object instance to object instance; for example all premium customers get an * in front of their names in VisualID2.