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Cognos Visualization error

error:

The web request failed.

Details:

404 – Not Found
URL: http://cognosserver/ibmcognos/bi/common/palettes.json

Solution:

On your webserver pallettes.json needs to be copied from install location analytics\webcontent\bi\common  to the analytics\webcontent\bi\common folder

Key words for search:

Source:

404 – Not Found – palettes.json

Tableau how to get more then 16 columns

I tried following approach and it worked.
rename .twb file to .xml
(if your tableau file is twbx then rename this file to .zip . get .twb file from this zip file. )
Open in notepad

search for following text:

change ’16’ to your desired value.
Now rename the .xml back to .twb. Open in tableau.

Though you could add more columns in tableau by changing xml, UI doesn’t look good. As tableau doesn’t support scroll bar on “Rows”

source:
https://community.tableau.com/thread/238456