Equisys technical notes

Technical guidance, explanations and fixes for our products

PRB: Unable to import language modules in NAV 2013 R2 or NAV 2015



ID: ZTN4435

This Zetadocs technical note applies to:

  • Microsoft Dynamics NAV 2013 R2 and NAV 2015
  • Versions v6.0/v6.1/v7.0/v7.1 of Zetadocs for NAV
  • Zetadocs Express


The following error message is displayed when attempting to import a language module into a non-W1 version of Microsoft Dynamics NAV 2013 R2 or NAV 2015: “The table definition is invalid and cannot be validated”.

Following this error message being displayed, the import of the language modules is aborted.


This is a known issue with importing language modules in Microsoft Dynamics NAV 2013 R2 and NAV 2015.


Before importing the language modules follow the steps below:

  1. Open the NAV Development Environment.
  2. Go to Tools -> Options.
  3. Change the Prevent data loss from table changes option to No as shown in the picture below:

    NAV Options
  4. Press OK. (Make sure to press OK as using ESC to close the form will revert the changes).
  5. Import the language modules.

Once the language modules have been imported, the Prevent data loss from table changes option can be changed back to Yes.


·         HOWTO Import language modules from NAV 2013 R2 to NAV 2016

Last updated 21st October 2015 (JV/MW/WK)

Keywords: table definition is invalid and cannot be validated

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