An explanation of AX Application File Extensions

Dynamics Ax uses several file name extensions for the files that are installed as part of Microsoft Dynamics Ax.

You can use the following naming conventions to understand the function of these files:

•             The first letter represents the owner of the file.  

A: Application 

K: Kernel             

•             The second letter represents the contents of the file.  

L: Label 

O: Object 

T: Text 

D: Developer Documentation 

H: Online Help  

•             The third letter represents the type of file.  

D: Data 

I: Index 

C: Cache 

T: Temporary    

So, for example, a *.aod file is an application object data file, and *.aoi is application object index.

Best Rgds,

Tariq Bell - Dynamics AX Support Specialist