API requires clientID after refreshing wsdl web reference

[Thivya]

Need help Please!! 

Once after refresh wsdl web reference, each api service expecting paramater clientID, So that I tested using sandbox account(Web Reference: https://apitest.authorize.net/soap/v1/Service.asmx?wsdl), for that i send clientID parameter as null and it works good, My question is that what is the use of clientID and what should I send clientID's Parameter for live account(Web Reference: https://api.authorize.net/soap/v1/Service.asmx?wsdl).

[NexusSoftware]

ClientID is for internal use by Authorize.Net and is not required.

[Thivya]

Thank you so much @NexusSoftware...

And I need some Clarification in that,

What's the use of clientID? 

Shall I Send it has Null?? 

If I Sending as Null, Transaction process works good for sanbox Account, My Question is that, whether it affect Transaction in Production Account by sending clientID as Null??

[NexusSoftware]

clientID is not required, don't include it in your request.

[Thivya]

@NexusSoftware

Hi, 

But once refreshing SOAP web reference, api services listed with compiler error, that api service expecting string parameter of clientID ?

[NexusSoftware]

If you are requiring the SOAP web reference, send as null. The sandbox works the same as live. 

[Thivya]

@NexusSoftware

Thank you...

Sending clientID as null it works good in sanbox account.

[NexusSoftware]

You are welcome.