Query works in preview, but not when added under a Query Group

Hello Experts-

I'm trying to use this query as one of the options under the drop down on the Supplier Search under the Supplier Management.

Error message:

while trying to invoke the method com.sap.odp.comp.query.QueryParamValue.getPromptParamDef() of a null

object loaded from local variable 'paramValue' while trying to invoke the method

com.sap.odp.comp.query.QueryParamValue.getPromptParamDef() of a null object

loaded from local variable 'paramValue'

The query itself is complicated, but it works fine when executed under preview.

Wondering if any one has ever seen this behavior and knows of any typical causes?

Thanks,

Mike