“Microsoft.BizTalk.Administration.EdiExt.ComboItem” error when you save changes for EDIFACT/X12 encoding settings

Applies To
BizTalk Server 2016 Branch BizTalk Server 2016 Developer BizTalk Server 2016 Enterprise BizTalk Server 2016 Standard

Symptoms

When you try to save your changes for EDI Agreement that use the EDIFACT/X12 encoding protocol settings, the changes are not saved. Additionally, you receive the following error message:

Note

Unable to cast of type 'Microsoft.BizTalk.Administration.EdiExt.ComboItem' to type 'System.String'

Resolution

The fix that resolves this issue is included in the following update for BizTalk Server:

Cumulative Update 5 for BizTalk Server 2016

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

Learn about service pack and cumulative update list for BizTalk Server.

Learn about BizTalk Server hotfixes and cumulative update support.