input: [Applies to...] Data, layers, maps [Description] For a data source: Google Maps Engine finished uploading the specified data but needs some additional information in order to process it. For example, a required associated file might be missing. For a layer: A layer was created but is empty or includes unprocessed data. For a map: A map was created but is empty or has layers that are unprocessed or unpublished. All layers must be published before a map can be processed. [Status] 
output: Not ready to process