Standard field not available in older WSDL

Some standard fields are not available in older WSDLs but custom ones are. One way to resolve this is to create a custom field that acts as a copy of the standard field.

Note:
-This will not work with multiple select type fields.
-For fields that are of type List/Record this will return the name and not the internal id

1. Create a new field of type Free-Form Text on the record.
2. Uncheck Store Value.
3. In the Validation & Defaulting tab set the Default Value field to be a formula and set the field to be the one that should be accessible via Web Services.
4. Give the field a unique name and save. If desired the field can have its Display Type set to Hidden in the Display tab so that it doesn't show up in the UI.