Error: Neither variable(s) nor rule(s) found: id

Question

I have created an interface, which works perfectly on the expression builder. When calling the same on a process module, the process module throws an error "There was an error in an expression in Create Logistics Group at null: Neither variable(s) nor rule(s) found: id"

Attaching the code for related interfaces.

Create Logistics Group.zip

saileshd · Answer

Hi All thanks for helping me out here. I was able to figure out the problem here. I was missing a ',' for a if statement which my interface didn't catch

Sushma Rathnaiah · Answer

I also came across same problem for change in interface for existing process model. Your answer helped me to troubleshoot one by one all interface rules which was calling inside one main interface. Finally figured out there was two 'value:' text written inside of a!richTextDisplayField. (which was not caught in interface level) . Finally I understood if process model throws error in user input node with "Neither variable(s) nor rule(s) found: value" means problem with interface which was not caught in Appian Designer side.

Preji P · Answer

Hello all, 
 I too encountered same issue while tring to publish my PM but Appian did not allowed me to do so and keeping throwing below error : There was an error in an expression in null at : Neither variable(s) nor rule(s) found: required 
 Your above answers helped me locating the error which was in the Interface called by this PM and this interface had two values for required parameter, this error was not caught in interface level. I also observed that for me PM did not throw error at the userinput node instead it was taking me to the process model's property-> General.

Error: Neither variable(s) nor rule(s) found: id

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