The SAP adapter does not connect to SAP servers if passwords contain some special characters, such as a slash ( \ ). Additionally, the following error message is generated:
The Messaging Engine failed to add a receive location "******" with URL "sap ://************" to the adapter "WCF-SAP".
Reason: "Microsoft.ServiceModel.Channels.Common.ConnectionException: Name or password is incorrect (repeat logon) ---> SAP.Middleware.Connector.RfcLogonException: Name or password is incorrect (repeat logon) ---> SAP.Middleware.Connector.RfcAbapMessageException: Name or password is incorrect (repeat logon)
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This problem is fixed in the following cumulative update for BizTalk Server:
Cumulative Update 2 for BizTalk Server 2020
For information about the service packs and cumulative update list for BizTalk Server, see the following article in the Microsoft Knowledge Base:
2555976 Service pack and cumulative update list for BizTalk Server
For more information about BizTalk Server hotfixes, see the following article in the Microsoft Knowledge Base:
2003097 Information about BizTalk hotfixes and Cumulative Update support
Third-party information disclaimer
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.