Diagnosis
In the criteria rules for a subscription generator an entry referencingto the linked criteria field has to be established for a link betweencriteria fields .
For the given criteria field (see Technical Information) the criteriafield link entry cannot be found. It is either invalid or missing onthe data base.

System Response
The subscription generator cannot work correctly.

Procedure
The subscription generator has to be recreated. Make sure that thecriteria field link is established correctly. For more informationrefer to the documentation.
Always create and test subscription generators on your test system. Ifeverything works correctly, transport the generator to the targetsystems.
After creation, transport (if necessary), and activation of the newsubscription generator on the target client, the invalid subscriptiongenerator can be set to status 'To Be Deleted'.