How to output <field/> instead of <field></field>?

Hi Experts,

When outputting XML files, the file receiver adapter would parse blank or null values like this:

<field></field>.

But a 3rd part system does not support this format(really weird, but it's true), it only supports:

<field/>.

Is there any way to control the file receiver adapter to output blank/null nodes as <field/> but not <field></field>?

Any advice is appreciated, thanks a lot for you your.

Best regards

Luis