Logic App Transform XML error - 'Cannot find a script or an extension object associated with namespace 'https://schemas.microsoft.com/BizTalk/2003/userCSharp'

[Azure Logic Apps - VETER Pipeline](https://github.com/Azure/azure-quickstart-templates/tree/master/201-logic-app-veter-pipeline)

### Issue Detail Logic App Transform XML error - 'Cannot find a script or an extension object associated with namespace 'https://schemas.microsoft.com/BizTalk/2003/userCSharp'

### Repro steps
1. Followed the steps for deploying Azure Logic Apps - VETER Pipeline.
2. Performed HTTP Post using Postman, received HTTP 502 Bad Gateway - {"error":{"code":"NoResponse","message":"The server did not received a response from an upstream server. Request tracking id 'xxxx'."}}

3. Detailed error from the Logic App run shows as follows:

{
"statusCode": 400,
"headers": {
"Pragma": "no-cache",
"Cache-Control": "no-cache",
"Date": "Tue, 24 Mar 2020 19:06:31 GMT",
"Server": "Microsoft-IIS/10.0",
"X-Powered-By": "ASP.NET",
"Content-Length": "5535",
"Content-Type": "application/json",
"Expires": "-1"
},
"body": {
"Code": "InvalidXsltContent",
"Message": "An error occurred while processing map. 'Cannot find a script or an extension object associated with namespace 'https://schemas.microsoft.com/BizTalk/2003/userCSharp'.'",
"Details": [
{
"Code": "InvalidXsltContent",
"Message": "{\"StatusCode\":400,\"ErrorCode\":7,\"Details\":null,\"Message\":\"An error occurred while processing map. 'Cannot find a script or an extension object associated with namespace 'https://schemas.microsoft.com/BizTalk/2003/userCSharp'.'\",\"Data\":{},\"InnerException\":{\"ClassName\":\"System.Xml.Xsl.XslTransformException\",\"Message\":\"Cannot find a script or an extension object associated with namespace 'https://schemas.microsoft.com/BizTalk/2003/userCSharp'.\",\"Data\":null,\"InnerException\":null,\"HelpURL\":null,\"StackTraceString\":\" at System.Xml.Xsl.Runtime.XmlQueryContext.InvokeXsltLateBoundFunction(String name, String namespaceUri, IList`1[] args)\\r\\n at SAPOrderMap.(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime, XPathNavigator {urn:schemas-microsoft-com:xslt-debug}current)\\r\\n at SAPOrderMap.(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime, XPathNavigator {urn:schemas-microsoft-com:xslt-debug}current)\\r\\n at SAPOrderMap.Root(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)\\r\\n at SAPOrderMap.Execute(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)\\r\\n at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlSequenceWriter results)\\r\\n at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer)\\r\\n at System.Xml.Xsl.XslCompiledTransform.Transform(XmlReader input, XsltArgumentList arguments, XmlWriter results)\\r\\n at Microsoft.Azure.Function.Transform.XsltTransformer.TransformToXmlInternal(ProcessedXslt`1 processedXslt, XmlReader inputXmlReader, XsltArgumentList xsltArguments, Nullable`1 transformOptions) in X:\\\\bt\\\\1064798\\\\repo\\\\src\\\\functions\\\\Scripts\\\\Function.Transform\\\\XsltTransformer.cs:line 235\\r\\n at Microsoft.Azure.Function.Transform.XsltTransformer.TransformInternal(ProcessedXslt`1 processedXslt, XmlReader inputXmlReader, XsltArgumentList xsltArguments, Nullable`1 transformOptions) in X:\\\\bt\\\\1064798\\\\repo\\\\src\\\\functions\\\\Scripts\\\\Function.Transform\\\\XsltTransformer.cs:line 174\",\"RemoteStackTraceString\":null,\"RemoteStackIndex\":0,\"ExceptionMethod\":\"8\\nInvokeXsltLateBoundFunction\\nSystem.Data.SqlXml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089\\nSystem.Xml.Xsl.Runtime.XmlQueryContext\\nSystem.Collections.Generic.IList`1[System.Xml.XPath.XPathItem] InvokeXsltLateBoundFunction(System.String, System.String, System.Collections.Generic.IList`1[System.Xml.XPath.XPathItem][])\",\"HResult\":-2146231998,\"Source\":\"System.Data.SqlXml\",\"WatsonBuckets\":null,\"res\":\"Xml_UserException\",\"args\":null,\"sourceUri\":null,\"lineNumber\":0,\"linePosition\":0,\"version\":\"2.0\"},\"TargetSite\":{\"Name\":\"TransformInternal\",\"AssemblyName\":\"Microsoft.Azure.Function.Transform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null\",\"ClassName\":\"Microsoft.Azure.Function.Transform.XsltTransformer\",\"Signature\":\"Microsoft.Azure.Function.Transform.XsltTransformOutput TransformInternal(Microsoft.Azure.Function.Common.Xml.ProcessedXslt`1[System.Xml.Xsl.XslCompiledTransform], System.Xml.XmlReader, System.Xml.Xsl.XsltArgumentList, System.Nullable`1[Microsoft.Azure.Function.Common.Xml.XsltTransformOptions])\",\"Signature2\":\"Microsoft.Azure.Function.Transform.XsltTransformOutput TransformInternal(Microsoft.Azure.Function.Common.Xml.ProcessedXslt`1[[System.Xml.Xsl.XslCompiledTransform, System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], System.Xml.XmlReader, System.Xml.Xsl.XsltArgumentList, System.Nullable`1[[Microsoft.Azure.Function.Common.Xml.XsltTransformOptions, Microsoft.Azure.Function.Common, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]])\",\"MemberType\":8,\"GenericArguments\":null},\"StackTrace\":\" at Microsoft.Azure.Function.Transform.XsltTransformer.TransformInternal(ProcessedXslt`1 processedXslt, XmlReader inputXmlReader, XsltArgumentList xsltArguments, Nullable`1 transformOptions) in X:\\\\bt\\\\1064798\\\\repo\\\\src\\\\functions\\\\Scripts\\\\Function.Transform\\\\XsltTransformer.cs:line 214\\r\\n at Microsoft.Azure.Function.Transform.XsltTransformer.d__9.MoveNext() in X:\\\\bt\\\\1064798\\\\repo\\\\src\\\\functions\\\\Scripts\\\\Function.Transform\\\\XsltTransformer.cs:line 92\\r\\n--- End of stack trace from previous location where exception was thrown ---\\r\\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\\r\\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\\r\\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()\\r\\n at Microsoft.Azure.Function.Transform.TransformRequestProcessor.d__2.MoveNext() in X:\\\\bt\\\\1064798\\\\repo\\\\src\\\\functions\\\\Scripts\\\\Function.Transform\\\\TransformRequestProcessor.cs:line 49\",\"HelpLink\":null,\"Source\":\"Microsoft.Azure.Function.Transform\",\"HResult\":-2146233088}",
"Details": null,
"InnerError": null
}
],
"InnerError": null
}
}

4.
5.

Start with the 201-logic-app-veter-pipeline template and inspect the deployed Transform XML step and SAPOrderMap referenced in the error. Reproduce the HTTP POST in Postman; done means the sample request completes without the InvalidXsltContent or userCSharp namespace error.

Written by the indexing model from the issue text.