Intune - Mismatch between the value type and the configuration value error when configuration value has an ampersand

This article provides the methods to solve the mismatch error that occurs if the configuration value has an ampersand in Microsoft Intune.

Original product version:   Microsoft Intune
Original KB number:   4469673

Symptoms

Consider the following scenario:

• You create an app configuration policy for managed iOS devices in Intune.

• Under Configuration settings > Configuration settings format, you select Use configuration designer.

• You add a setting in which the Configuration value is a URL that contains an ampersand (&). The following is an example:

  Configuration key: ssoAuthEndpoint
  Value type: String
  Configuration value: https://sso.contoso.com/idpov/accesslogin/FedSSODispatch.faces?PartnerIdpId=https://sts.windows.net/{GUID}/&TargetResource=https://sso.contoso.com/idprov/pages/home/dispatch.jsp?SpName=MBF

In this scenario, you receive the following error message when you click OK to save the configuration setting:

Mismatch between the value type and the configuration value in the configuration settings designer
The configuration settings designer has a value type as String but a configuration value as "https://sso.contoso.com/idpov/accesslogin/FedSSODispatch.faces?PartnerIdpId=https://sts.windows.net/{GUID}/&TargetResource=https://sso.contoso.com/idprov/pages/home/dispatch.jsp?SpName=MBF", which has invalid characters XML format doesn't support. Please correct it accordingly.

Cause

This issue occurs because iOS configuration profiles don't support the ampersand (&) character in XML configuration files.

Resolution

To fix the issue, use one of the following methods:

• Create a short URL that redirects to the original URL that contains the ampersand (&), then use the short URL as the Configuration value.

• Replace & with & in the URL. For example:

  https://sso.contoso.com/idpov/accesslogin/FedSSODispatch.faces?PartnerIdpId=https://sts.windows.net/{GUID}/&TargetResource=https://sso.contoso.com/idprov/pages/home/dispatch.jsp?SpName=MBF

If you can't use either of these methods, contact Apple 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.

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Microsoft documentation: https://docs.microsoft.com/en-us/troubleshoot/mem/intune/mismatch-error-configuration-value-ampersand