INVALID CHILD ELEMENT

Hi All,

I am trying to import an unmanaged solution into Dynamics 365  Customer Engagement(CRM) 2016 and I have recieved the following error:

Error Code: 0x8004801A

Error Text: The import file is invalid. XSD validation failed with the following error: "The element 'CustomControlDefaultConfig' has invalid child element 'CustomControlDefaultConfiId'."

This is the current <CustomControlDefaultConfig> element on my customizations.xml file is shown below:

<CustomControlDefaultConfigs>

<CustomControlDefaultConfig>

<CustomControlDefaultConfigId>{aa40e0ae-8adc-e711-a94d-000d3af3e5ff}</CustomControlDefaultConfigId>
<ControlDescriptionXML><controlDescriptions /></ControlDescriptionXML>
<IntroducedVersion>1.0.0.0</IntroducedVersion>

</CustomControlDefaultConfig>

</CustomControlDefaultConfigs>

Any help and feedback will be much appreciated

Thank you

Musa