Failed to Handle Document Numbering

SAP Experts,

I currently am having the following error: 'Failed to Handle Document Numbering' when clicking on the 'Add' button of my UDO Form.

Apparently, the error is occurring when the XML Reader is parsing the attributes of my UDO SRF (XML) file (I'm not sure this is the case, but this is the idea i got from the stacktrace).

Can you please examine the causes of this error? The SRF file is attached and the stacktrace is below:

Raised Issue: Fail to handle document numbering:System.Xml.XmlException: '>' is an unexpected token. The expected token is '='. Line 1, position 68.

   at System.Xml.XmlTextReaderImpl.Throw(Exception e)

   at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)

   at System.Xml.XmlTextReaderImpl.ThrowUnexpectedToken(String expectedToken1, String expectedToken2)

   at System.Xml.XmlTextReaderImpl.ParseAttributes()

   at System.Xml.XmlTextReaderImpl.ParseElement()

   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()

   at System.Xml.XmlTextReaderImpl.Read()

   at System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc)

   at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)

   at System.Xml.XmlDocument.Load(XmlReader reader)

   at System.Xml.XmlDocument.LoadXml(String xml)

   at UDOFormManagement.FormUtility.UDODocumentForm.OnHandleFormDataAdd(BusinessObjectInfo& BusinessObjectInfo, Boolean& BubbleEvent)