Unique customer id

[ravimukkavilli]

Hello,

I want o assign each transaction done by a user a uniqued id. Something like datetime_userid. Is there any field that I can use. Wht's the max lenght of it.  Will it take alphanumeric characters like '_' etc?

Thanks,

Ravi

[RaynorC1emen7]

Are you talking about a merchant defined fields?

http://www.authorize.net/support/merchant/Integration_Settings/Additional_Integration_Features.htm

Since it will not be save on authorize.net, it probably could be anything.

[ravimukkavilli]

I'm looking for some id (a unique id that my application is generating) that is returned by authorize.net so that I can associate which user has posted at what time, when multiple users are posting payments.

Thanks.

[RaynorC1emen7 · Accepted solution]

So yes, you can just pass somthing like rm_uniqueId=[uniqueID] and it will return it back on the response.