You noticed that in Silverlight UI you have a Custom PDI (Partner Solution) workcenter that is working, but in HTML UI it is not available even that is selected in Workcenter and View Assignment.
SAP Business ByDesign
Partner content (Add-on) by default is not enabled in Bydesign HTML client in Productive tenants. If you have tested this solution successfully in Test tenants, you can activate the solution by front-end (just available for Key Users).
Follow the steps below to activate the Customer Workcenter in HTML UI:
Login in the system in HTML UI.
Go to User Menu, and then to Key User Settings.
Select Enable Add-ons.
A question asking if you are sure that the partner solution is working fine will appears. Select yes if you have already tested the solution in Test System and agree to activate it to your HTML version.
After logoff and login again you should be able to see the custom workcenter.
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