Issue in XML Received from R3

Hi Experts,

Once again I'd like to ask for your help. Basically, we are doing an SAP < > PI < > WS Scenario. For our function module, we wrote another one in which the output of function module A will be the request sent to SAP by function module B. Our problem, in our development environment, we are receiving the XML with the correct tags and values:

<Root>
   <Parent>
     <child1>value1</child1>
     <child2>value2</child2>
   </Parent>
</Root>

However, when we moved this FM to the Testing Environment, we are now receiving the following structure:

<Root>
  <Parent>
    <child1>value1value2</child1>
    <child2></child2>
  </Parent>
</Root>

Has anyone ever encountered an issue like this?

Regards,