BuildMap vs Customization Rule

IdentityIQ (IIQ) IIQ Discussion and Questions
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1

Hi all,

Which rule is more expensive to run:

BuildMap or the Customization Rule in a aggregation scenario?

And Why?

Have been trying to get an answer on the community but haven’t been able to.

Thanks in advance

2

Customization Rule is more expensive to run during aggregation.

Reason:

  • The BuildMap Rule executes once per record at the raw data level — it just manipulates a simple Map before IIQ object creation, which is lightweight.

  • The Customization Rule runs after the object is built (Account or Identity), meaning IIQ has already created and loaded full objects into memory, making it heavier on processing and memory usage.

  • Therefore, BuildMap is faster and more efficient for transformations during aggregation.

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What is the difference between BuildMap rule and Customization Rule?
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