Error during CPOS/MPOS activation for Microsoft Dynamics 365 for Retail

In this blog I am going to show you how to fix an error you get during CPOS/MPOS activation. At times you may get following error :

Validation: Failed, Messages: <“Channel has not been published.”>

Solution:

Step 1
Go to Channel categories and product attributes. Select your store and in Category hierarchy select channel navigation hierarchy

Step 2
Then click on publish channel updates

Step 3
Now go back to your device and  click on “Validate Devices for Activation.” You should not get the error message anymore. Hope this works!