000049: Failed to build attribute table.

Question

I encountered an error message while executing the 'Build raster attribute table' for my dataset“
000049: Failed to build attribute table.”， But I have checked that my dataset is an unsigned integer 32-bit, and it is a single band. Why does it still report an error? The weirdest thing is that I have already created one, but the others are still reporting errors. I don't know why this raster dataset doesn't report errors. I suspect that my table records too much information, so it reports an error

泽军霍 · Answer

Thank you very much for your reply！ My dataset is not a multidimensional raster. Just now, I created unique values in the symbol system in ArcGIS software, and it showed that the number of my unique values exceeded the default limit (>65536). Is this the reason? Do you have some better advice, because I need to create a property table for my subsequent work.

DanielFox1 · Answer

Hi @泽军霍

Can you try the following steps to see if this has worked for you?

* After creating the multidimensional mosaic dataset and adding the rasters to the mosaic, add the mosaic to the map
* Right click on the mosaic dataset and select "Data" then "Export Raster"* In the Export Raster options, please specify the following:* Verify the pixel type is an integer (this should match up with the mosaic dataset)* This tool will not run if the pixel type is floating point or double precision.

* For Output Format, specify "CRF"
* The rest of the options can be left as default, and run the tool

* Run "Build Raster Attribute Table" on the resulting raster layer from the export* After running "Build Raster Attribute Table", please remove the raster and re-add it to the map to view the attribute table

Here is the article that is related to the error you are getting

https://doc.arcgis.com/en/allsource/1.0/reference/tool-errors-and-warnings/000001-010000/tool-errors-and-warnings-00026-00050-000049.htm#:~:text=Solution,not%20support%20raster%20attribute%20tables.

This error is present due to how the multidimensional raster was created.