Rule Definition
Integration Complexity equals the minimum number of tests to check the program's integration behavior.
High IC means more testing and higher risk of errors.
Remediation
Review the design of the program to reduce the number of independent integration paths. E.g.: reduce the number of CALL statements.
Reference
NIST (National Institute of Standards and Technology)
Structured Testing: A Testing Methodology Using the Cyclomatic Complexity Metric
Chapter 7 - Integration Complexity
http://hissa.nist.gov/HHRFdata/Artifacts/ITLdoc/235/chapter7.htm#449027
Related Technologies
Technical Criterion
Architecture - Object-level Dependencies
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