Maintain Fieldglass Partner
To connect to Fieldglass via any API you need to have a Fieldglass Partner Key. Usually you get this partner key as soon as you integrate with Fieldglass via any WebService API. In most cases this is already done during the Fieldglass Implementation. You can use this same partner key for the Solution Manager integration.
If you didn't integrate via an WebService API with Fieldglass but instead e.g. use file integration, you might not have a Fieldglass partner key yet. To request a partner key for the Solution Manager Integration you can either create a ticket with the SAP Fieldglass Service Desk or contact your Account Service Representative.