How to activate Fiori service

If you've added some Fiori launcher role, some app services might not be activated.

For example, in Sales Orders chapter I have Sales Order Fulfillment Resolve Issues app

where I want to select follow-up activity:

And have an error with key-words App could not be opened either due to an incorrect SAP Fiori launchpad configuration or a missing role assignment and Failed to resolve navigation target:

After that, go to transaction /IWFND/ERROR_LOG - SAP Gateway Error Log  where you can see the service name (CB_SALES_ORDER_SRV)

Having the name of service, go to transaction /IWFND/MAINT_SERVICE where pass the procedure below: 

Add service

Put service name in search field of Technical Service Name, find the service, add them:

Confirm Package assignment:

After service activation, instead of error we see the beautiful screen of sales order overview app: