Integration and Testing

Authorize.Net API questions and help with your payment integration.

Posts: 1
Registered: ‎10-27-2011

Error Code E00003 for ARB

I need help, please. I am trying to get my ARB running and This stumps me.

I keep getting this error code.


Response Code: Error
Response Reason Code: E00003
Response Text: Name cannot begin with the '=' character, hexadecimal value 0x3D. Line 1, position 405.
Reference Id:
Subscription Id:


I have checked my  HTML form and it is completely compliant. See the example:


<tr><td align="right"><font size="3" face="arial">First Name:&nbsp; &nbsp; &nbsp;&nbsp;</font></td>
                <td align="left"><input type="text" name="firstName" value=''>&nbsp; &nbsp; &nbsp;&nbsp;</td></tr>


As you can see, the field name is exactly as in the sample that was given. I changed nothing except for design.


The same way with the PHP that I downloaded. Nothing changed at all except of course my transaction and username numbers.


No where can I see an erroneous '=' anywhere.


Any help? Please!

Or, If anyone has some good stable php code with the corresponding html form they would like to pass on, That would be fantastic!:womanwink:


I am operating on a shoestring right now.


Thank you,



Posts: 1,609
Topics: 15
Kudos: 209
Solutions: 121
Registered: ‎06-23-2011

Re: Error Code E00003 for ARB

This doesn't have to do with the form - rather it's the values that are being passed from the form, or the XML that's being generated from those values. E00003 spans a whole bunch of XML formatting / data errors.