Determining the type of system definition required

Your requirement to perform a full system definition or a partial one depends on the macro statements altered. However, the modification of a particular keyword might be the only cause for full generation.

Because the amount of processing performed during a stage 2 execution is significant, you should plan to take advantage, wherever possible, of economics in the type of generation selected.

Related reading: For a summary of types of system definition to choose, see IMS Version 15.4 System Definition.