Installing a PKCS #12 Credential 
To install a PKCS #12 credential file, you must upload it to the server, configure the credential attributes and restart the respective ADS-relevant services.
Start the SAP NetWeaver Administrator via the internet address http://<server>:<port>/nwa.
<server>: AS Java, where the Adobe Document Services are installed
<port>: HTTP port of the AS Java
Choose .
Choose Document Security from the navigation pane.
Select Credentials from the list and choose Manage P12 Files.
To upload a new file, proceed as follows:
Choose Add New File.
Select a P12 file from your local file system.
Choose Upload.
Configure the credential attributes, such as registering the password, for each credential.
More information: Configuring Credential Attributes used by ADS
Restart the service Document Service Trust Manager Service and then the service PDF Manipulation Module for the changes to take effect.
More information: Starting or Stopping an ADS-relevant Service