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Use
The processing type of a variable determines how a variable is filled with a value for the runtime of the query or Web application.
Features
The following processing types are available:

Depending on the type of variable used (context-sensitive), the possible processing types are offered in the variable wizard. For more information about the possible combinations of variable types and processing types, see
Overview of Variable Types and Processing Types.Activities
In the variable wizard, in the General Information dialog step, choose the required processing type.