ErrorApplication error48000: Invalid request payloadPositive FeedbackNegative FeedbackDescriptiondescription page anchorPositive FeedbackNegative FeedbackThe callback request payload provided is invalid Possible causespossible-causes page anchorPositive FeedbackNegative Feedback You might be using an old version of Frontline application. Possible solutionspossible-solutions page anchorPositive FeedbackNegative Feedback Update your Frontline application.