Hi,
I agree with Mangat.
As designing WebServices is “per Contract” (the WSDL in this case) you will have to check with the provider you are connecting to why this field is mandatory for them.
Depending on the definition of the field (i.e. minLength, maxLength, length, some pattern), you can check if it is possible to just send an empty String of length 0.
In this case the field is existing (“not null”), but contains no value.
Regards,
Holger
#webMethods#Integration-Server-and-ESB#edi