We are using an Amasty extension called Customer Attributes. We have created a customer attribute called "b2bstorenumber" and need this field added to the Magento standard API function SalesOrderInfo.
Yes, I can help you to add attribute to your Magento API
I am Magento Expert by profession and I can surely do this task very well
Please open the chat room to discuss further..
looking forward for your response..
Thanks,
Preeti