"You have exceeded the maximum number of 2000 characters in this field; it will be truncated."

When you create a campaign in CRM 4.0, the Office field(attribute name: objective) has a 2,000 characters limit. How to get rid of the limitation?

It's a system field which you can't change its MaxLength from CRM customisation interface, however, you could make change from the customisation.xml file.

What you need to do is: export the campaign entity as a xml file, open the field, search "objective", you may find it's property: 2000, change it as you like(In CRM 4.0 the ntext data type has the MaxLength limitation up to 100,000 which is much better than CRM 3.0). Then save the file, import into CRM, and publish it. It works as you wish.

Although it's an unsupported customisation, since CRM 4.0 does allow you extend the field length(using DMM), so I think it's safe and nearly supported. :)

By the way, this technique can be used in many places, not just for this attribute. It also works in CRM 3.0.