I'm trying to query two columns on a list, one with a number and another with a drop down. I want to return the results to a Collection variable I've set up called knowissuescollection to be counted later in the workflow. However I'm getting 'The variable knownissuescollection has been used more than once.' I thought I could store more than one variable as a collection? What am I doing wrong?
In your case, values for each column must be stored in separate collections. You simply need to create a new collection variable and use it for the Known Issues Notification field.