The add-on recommended installation method is using the lightweight installer. Lightweight add-ons are installed by using the SAP System Landscape Directory (SLD) Extension Manager website. The add-on is installed once at the SLD, and then the SAP client application running on every workstation or server at your network will handle the local installation. The lightweight package is a zip file, and contains versions for 32bit and 64bit SAP clients. The zip package is uploaded to SLD without unzipping it. Make sure to:

• Run the SAP client with Administrator permissions when installing or upgrading the add-on, so SAP has the permissions to write or replace the add-on files.
• When upgrading, make sure there are no add-on processes running in the machine, because files cannot be replaced if are being used.

To open the Extension Manager you can use the link provided in the Add-On Administration module in SAP:

Import the add-on at the Extension Manager

This is the SAP Extension Manager. To import the add-on, you have to click on the Import button. Click Browse, select the .zip lighweight package, and then click Upload. Then click next until the installation completes.  

Assign the add-on to SAP Companies

After installing the add-on, you have to assign it to the desired companies. The add-on is installed once at the server, and can be used by several SAP companies, for example you Production company and your Testing companies. Fot this task, go to the Company Assignment tab in the Extension Manager. In the Company List at the left hand side, click on the desired company, and then choose the Avatax add-on on the available extensions list.

Configure the add-on start up mode

At the StartUp mode step, you can define if the add-on has to start automatically, manual or it’s disabled. If you want the add-on to start immediately when SAP starts choose automatically.   You can also update the default start up mode, or set specific start up modes for specific users after the add-0n is installed. Click on the Edit link at the Setting column, to edit the start up modes:  

Run the SAP client

After installing the add-on at the Extension Manager, run the SAP client as administrator. If you already have the SAP client open, you have to log-out and log-in again. SAP will check for new extensions installed and will complete the installation. You will see a message at the SAP System Messages Log, indicating the add-on is installed.  

Upgrading the add-on

When upgrading to a newer version, follow the same steps described, but consider the following: Before restarting SAP check there are no Avatax add-on processes running in the machine. You can check this by opening the Windows Task Manager. If there are SBOAvatax.exe processes, you have to terminate them first, otherwise the upgrade could fail.  

Run the add-on

After the installation is completed, the Avatax add-on will appear in the Add-on Manager module: