Why am I seeing Error: INVALID_QUERY-FILTER_OPERATOR in Salesforce? Laura May 01, 2020 18:30 Updated Follow This error message is normally triggered when zero contacts have been selected. Please return to your Salesforce view, use the checkboxes to select contacts, then try again. Related articles What does the Dial Session window look like in Salesforce? Can I have more than one Admin on my team? How to use process builder to update contacts based on completed tasks in Salesforce. Why are my voicemails not being left? Can I control what area codes are blocked or allowed? Comments 0 comments Please sign in to leave a comment.