How to change the namespace

Hi Experts,

i have sent the PO’s. The
files look good, except for the name space, ‘nm’ instead of ‘n0’.

What they received:

<nm:PurchaseOrderERPRequest_V1 xmlns:nm="http://sap.com/xi/"

What they expect:

<n0:PurchaseOrderERPRequest_V1 xmlns:n0="http://sap.com/xi"

can you please give me the better solution on this.

Thanks ,

Abhilash.