Calling the Application Help in the Help Center 
The Worth Knowing section of the Help Center contains a link to the application help. The link takes you to the SAP Library help topic assigned to the application. If no help topic is assigned, the link takes you to SAP Library.
Note the following:
To help you identify the help link in the list of links to company-specific content. the link text starts with the prefix SAP Library.
In the Help Center for ABAP transaction dynpros, the link text contains the transaction name.
In the Help Center for Web Dynpro applications, the link text contains the title of the help topic.
You have launched the Help Center of the application. More information: Launching the Help Center
Make sure that the Worth Knowing section is open
Select the help link with the prefix SAP Library.