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Support Article

No candidates found error for a function after import



A developer created a custom function in the development environment. After importing the function into production an assembly error is observed on execution.

Error Messages

Caused by: Invalid expression or reference: No candidates found [possible function name, ruleset or version or number of parameter problem]

Steps to Reproduce

1. Create custom function.
2. Import into production environment.
3. Run flow that references the function.

Root Cause

A defect in Pegasystems’ code or rules: Import of a function can sporadically result in an assembled function name that is not usable by the engine.


Apply HFix-30547 to prevent future occurrences.

Revalidate and save the function with errors to clear the issue.
Suggest Edit

Published December 24, 2016 - Updated October 8, 2020

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