SCRIPT_OF_API_VERSION_20 MUST ... The full code for this error is: SCRIPT_OF_API_VERSION_20_MUST_IMPLEMENT_A_SCRIPT_TYPE_INTERFACE. The corresponding long description is: SuiteScript 2.0 entry point scripts must implement one script type function. This error signifies that your script is missing an interface or that an error exists within the interface. This error can be returned when you try to upload a file, or when you try to edit a file that was previously uploaded.