Hi Eric,
(updated to add common errors text and link)
A few years ago, Localization Development Kit (LDK) was probably the solution. I believe this product is not available anymore with Cognos Analytics v11.x.
LDK was a licensed product that comes with the C10.x.x SDK Installation package in the later IBM Cognos 10 versions.
You can find some common errors in:
Common errorsI like your idea to group error messages.
Best regards,
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Patrick Neveu
Positive Thinking Company
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