20026: Layer is an ECW format raster

Your layer is an ECW format raster. By default, the ArcGIS for Server installation does not include support for ECW format rasters. Layers based on the ECW format will not draw without the proper support.

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Enhanced Compressed Wavelet (ECW) is ERDAS's (ER Mapper's) propriatary format. It is a wavelet-based, lossy compression, similar to JPEG 2000.

The ECW raster format is directly supported in ArcGIS for Desktop, but not in ArcGIS for Server or the ArcGIS Server Image extension . To use ECW in server-based products requires additional licensing permissions from ERDAS, Inc., the inventors of the ECW format. To contact ERDAS to request a license, send an e-mail to salesinfo@erdas.com. Once a license has been granted from ERDAS, it is possible to enable the ECW support in ArcGIS for Server and the ArcGIS Server Image extension.

Learn more about supported raster dataset file formats

9/1/2015