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Support Article

Only one modal dialog can be opened:error adding attachments



User has configured a link, which on click opens a modal dialog which renders a section. In that section, they have a button configured which is required to attach the file to that corresponding item.

However, the attachment is not getting attached to the item and also not present in the clipboard. And gives a popup with an error .

Error Messages

Only one modal dialog can be opened at a time

Steps to Reproduce

1. Configure a link to open a modal dialog.
2. In the section rendered from modal dialog, configure a button with "pyAttachContent" as local action on its click event.
3. Observe the scenario after running the flow.

Root Cause

Opening another modal dialog is not supported when already one modal dialog is opened.


Perform below steps inorder to achieve the reported requirement -

1. Configure a link to open modal dialog.

2. A button is configured in the modal dialog section as below - a section include of "pyWorkAttachmentsFeedElement" in repeating dynamic layout which is sourced with pagelist property "pyAttachments" of class "Link-Attachment" and a button to attaches the file to the current work item.

3. Below is the configuration of "Click to attach file" button.

4. Use the target as "Overlay" as opening modal dialog over other modal dialog is not supported and gives the reported error message.

5. Also, since refresh on overlay is not supported (interactions happen without any proper sequence), the attachment delete option is configured as below -

- Perform Save As of pyAttachmentsFeedElement section into application ruleset and modify the delete icon configuration as below:

6. And have an explict refresh on the modal dialog section, such that it refreshes the section to remove the attachment:

Published June 28, 2017 - Updated October 8, 2020

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