<DocumentErrorResponse xmlns="http://schema.intuit.com/platform/document/v2"> I receive this error when I add an attachment to the client?

Congratulations on your first post to the Community, pam. Resolving the error you’ve encountered is my priority here. 

We have a separate forum where our customers can engage with our developer team. This way, both of you with the engineering team can discuss what causing the error you got from the application, and guide you further through the process of resolving it.

Thus, we can post there by following the steps below. Once there, please elaborate on the steps you have taken before having that error. That way, our developers can determine its cause and provide a resolution:

1. Go to our Intuit Developer’s website.
2. Log in to your QBO account, to enable you to post your question.
3. Choose your QuickBooks product.
4. From the right corner, click "Ask Question."
5. Enter your question in the box. You also have the option to add details with your concern.
6. Click "Ask" to post your question.

Please don’t hesitate to post your queries there, pam. Also, you’re always welcome here in the Community if you have more concerns with QuickBooks. Have a good one! 

Any solution? I'm having the same problem.

Let's sort out your problem with adding attachments, Steve.

First, I'd like to know if you're using an app. If you're using one, you can use a browser to attach a file. However, if you're using a browser and can't make attachments, I suggest contacting our Customer Support Team so they can investigate this and provide further assistance. Here's how to reach them:

1. Log in to your QuickBooks Online (QBO) account.
2. Click the Help button at the top right corner.
3. Go to the Search tab, then select Contact Us.
4. Enter a brief discussion of your concern, then click Continue.
5. Choose to Have us call you to connect with us.

Our customer support schedule for Plus, Essentials, and Simple Start users is from Monday to Friday, 6 AM to 6 PM PT, and Saturdays from 6 AM to 3 PM PT. If you are using the Advanced version, assistance is accessible 24/7.

You can also check this link to view the list of supported attachment file types: Add or delete attachments in QuickBooks Online.

Furthermore, I'll add this article to help you import transactions manually to QBO: Manually upload transactions into QuickBooks Online.

Comment below if you have additional questions about adding attachments. I'll be here to help. Have a great day!

I was told that this is a bug that the engineers are working on.  Not sure when it will be resolved.

I was told by QB customer service that there is a bug and that engineering is working on it, although they are unsure how long it will take.

Have they resolved this for you? Mine still remains an issue.

I know this has been very challenging for you, terri.

I've seen here that you've posted twice in this forum with the same issue. I'd suggest following the response provided by my colleague through this link: https://quickbooks.intuit.com/learn-support/en-us/other-questions/re-attachments-in-qbo-app-stopped-....

If you have further questions or other QuickBooks concerns, please don't hesitate to reply in the comments below. We'll be around whenever you need help. Keep safe!