Microsoft deprecated the Discovery Service for Microsoft Dynamics CRM Online. Effective in 10.5.1, you must use the Organization Service for the password authentication type to access Microsoft Dynamics CRM Online.
After you upgrade to 10.5.1, mappings fail when you use the Discovery Service URL for the password authentication type to access Microsoft Dynamics CRM Online. You must update the Microsoft Dynamics CRM connection to use the CRM Organization Service URL.
You can continue to use the Discovery Service web service URL for the Claims-based and Active Directory authentication types to connect to the on-premise Microsoft Dynamics CRM.
For more information, see the
Informatica PowerExchange for Microsoft Dynamics CRM 10.5.1 User Guide for PowerCenter