This article refers to legacy products, components or features. Therefore, the content in this article is offered "as is" and will no longer be updated. This content does not infer that the product, component or feature is supported, or that the product, component or feature will continue to function as described herein.


When a comparison is performed between string values, an exception is thrown. This Hotfix applies to all instances where a comparison operator (>=, <=, <, >) is used to compare string values, for example in a Line Rule.

Error Scenario

Note: The circumstances described in this article are one scenario under which this issue may, or is known to occur. The description is intended to be specific to the scenario described and does not take into account all possible scenarios or circumstances.
  1. Create a K2 Process
  2. Configure a Line Rule to compare string values by using one of the following comparison operators >=, <=, <, >
  3. Plan the process and populate the data fields
  4. When the comparison is performed, the exception is thrown

Error Message

“Unable to compare values that is not of the same type.”

Error Resolution

This Hotfix is contained within the latest K2 blackpearl 0807 Update. Install the update package to resolve the error.

The latest K2 blackpearl 0807 Update is available as an independent installation package which can be found here: http://portal.k2.com/downloads/bp/Default.aspx