Dynamics AX 2012 XPO

First before going to XPO. We have see some fundamental concepts of Ax that is Model Management.

So what is Model Management in AX we have Different layers so user can perform different task on the layer which he can access.So when a user creates a table are modifies it that changes can be exported into a Model.

So a model are created when a group of elements in a specified layer are changed (like change in the code are adding a new filed in the tables etc.)that changes can be exported into a model.

Example:
A user using the cust layer so create a new table like abc so if he create a new Model file he will get only changes he did so he can save his work into a XPO.

What is Dynamics AX XPO ?
The Process Exporting the data of the table,forms,class are any AOT Elements into File with .XPO extension  is called as XPO file.so this xpo file are very important because all you r work have to share by using the XPO.

This XPO are used for moving the code from the test environment to deployment server.so this XPO are very useful when any unexpected error come we can remove the newly installed model so that it will not effect the other operation.

The name of the XPO should be based on the project name and date of deployment and table name and so on depends on the XPO we have give the naming of the XPO
Example BDlTDD015CustomerCreditLimit.This naming is used for finding error on based on the XPO import means if get bug on some issue so it will easy to find the XPO which has caused it.so we are getting a error in customer credit limit we can find the sources very easy based on the name of the XPO.

XPO are tested before they are installed because we have different apporaches in the deployment so some do the testing after integration of the XPO to the server and some do the testing in the testing system and check for any bugs.


Note : XPO don't know on which layer they are created so we have to be careful when exporting the XPO.

What can be  Exported into XPO ?
XPO we can export all forms,tables,class and AOT elements.


What are the step have to be taken before importing the XPO?

• First find the online user for the application so they all user have to log off the from Target system.
• Find the Dependencies on the environment so first stop all the services on the target environment.
• so select the server you want import and select the layer you want import than select the import option from the menu.
• so browse the model file you want to import from the target folder.
• So ones you select the particular path of the target server for deployment of XPO than select the particular file in the AOT shown check all the check boxs that you want import.
• Use compare Tool to find the new changes.   

 This Information is to give a some idea about the XPO Import so i will update the Blog with step by step with screen shorts very soon on importing the XPO.

Exporting Problem :

In exporting the we have be careful about the version ax we are using so say we have taken XPO in AX 2012 R2 and trying to import in Ax 2012 R3 than some issue may rise and vise versa.

So we have see more about system migration like from AX 2009 to AX 2012 

we can some the tools which microsoft has provided as following :

This is a command line tool which help in combining the different XPO file into a Single XPO from a group of XPO file from a folder.

using the following command in the command line

CombineXPOs.exe -XpoDir c:\MyApplication\ModelA -CombinedXpoFile c:\MyApplication\AXModelAFiles.xpo

so please find the below link for more details:

https://technet.microsoft.com/en-us/library/jj225589.aspx

we can use different parameters to get the XPO as per our requirement.so please read the above link carefully before using the above line some issue may raise if you dont follow the process.