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Related Action passing 1 parameter instead of 2

Sarah K.

I'm getting the following error message on a related action to a record I created:

An Error Has Occurred An error occurred while applying the context for the CTM External User List related action [identifier=67]. Details: Expression evaluation error at function rule!CTM_AddUpdateExternalUsers: Rule 'ctm_addupdateexternalusers' has 2 parameters, but instead passed 1 parameters.

The process model only has 1 parameter, so I'm not sure where it's referring to having 2 parameters? 

Thanks for suggestions on where to solve this issue.

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    Certified Lead Developer
     in reply to ranveerr
    Ranveerr is Correct!! When calling a rule and not passing the key’s of each parameter you are required to pass all the parameters. In the specific order, but if you pass the parameters with the keys your parameters will be optional.
    And this is recommended because that way when upgrading a rule you can break some code accidentally.

    Hope this helps
    Jose
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