Error: "... length of the string exceeds the value set on the masJsonLength..."

The Error

This error has been seen when a user attempts to enter time in a timesheet: 

"Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set of the maxJsonLength property. Parameter name: input"

The Cause

This error can occur when too many billing codes exist in the system and the timesheet is attempting to upload them all. To resolve, try culling the billing codes list of outdated/unused billing codes. See this article on managing billing codes: Billing Codes – Centerbase