Special Characters in XML tag name is not allowed

Hi All,

We have one IDOC to XML file scenario, in which we have to one tag name in XML (target structure) as <sample.001.123.23> which is the header field.

But as special characters except "_" are not accepted in XI/PI , We are not able to crack this.

But business said it must be there as what they proposed in their structure.

Please help in this regard.

Thanks,

Venkat