When a null value is passed into a!writeToMultipleDataStoreEntities() in an interface, the following error occurs:
Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error: An error occurred while executing a save: Expression evaluation error at function fn!error [line 8]: The valuesToStore parameter of a!writeToMultipleDataStoreEntities() cannot be null or empty.
This issue has been resolved via AN-84317 in the following hotfixes/versions:
Apply the latest hotfix to your Appian installation or upgrade to the latest version of Appian.
This article applies to Appian 16.2 and later.
Last Reviewed: July 2017
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