Hello there, divyeshchaudhari.
We know how importance of adding this feature to QuickBooks. We have a dedicated forum for QuickBooks Desktop (QBDT) API concerns and I can connect you with our Intuit Developers team to address your inquiry.
Our Intuit Developers team is responsible for addressing API concerns. Their webpage is dedicated to programming and system-related issues faced by businesspeople like you. I recommend creating an account on their webpage and posting your query there. This will ensure that you receive the appropriate response regarding the creation of adding and updating custom field data using XML.
Here's how:
- Go to the Intuit Developer page.
- Choose QuickBooks Desktop under What do you need help with?
- Click Ask a Question.
- Log into your existing Intuit Developer Account or create a new one.
- Enter your concern.
- Click Ask.
For helpful API topics, visit the Intuit Developer page. Select QuickBooks Desktop from the API Docs & Tools menu and choose API Explorer.
You can count on us to handle your business's growth and sales transactions with QBDT. Just inform us of your needs, and we'll take care of the rest. Have a fantastic day!