June 22, 2023

Resolving Attachment Issues in Power Automate Approval Action - 'Start and Wait for an Approval': Step-by-Step Guide


Recently, while working on a Power Automate Flow, we encountered a specific requirement involving the need to send attachments in an Approval action. To address this, we utilized the “Start and Wait for an approval” action. Within this action, we clicked on “Show advanced options” to configure the attachments field from the dynamic contents array variable that we had created for appending the attachment contents.

Here we passed the ApprovalAttachments array consisting of JSON objects with two properties “Name” and ContentBytes. 

  "Name": @{items('Apply_to_each_2')?['DisplayName']},   
  "ContentBytes": @{body('Get_attachment_content')}   

The flow was executed without any errors, and I received the expected emailHowever, the attached files were missing from the email.  

It became evident that the attachments were not being successfully included in the email.  Therefore, in this blog, we will thoroughly examine the procedure for sending multiple attachments using the “Start and Wait for an Approval action within Power Automate. Our focus will be on resolving the specific issue that arises when attempting to send attachments using this particular action. Let’s dive into the step-by-step process and find a solution to this problem! 


Step 1: Initialize the array variable. 

Step 2: "Get attachments" action in Power Automate returns all attachments for given item in the array.


Step 3: To read all the attachment contents, click on the next step and then select the "Get attachment content". 

Step 4: Proceed to the next step and select theAppend to array variableaction inside the apply to each loop. 

- Now select the variable ApprovalAttachment that you have previously created

- Configure the value using the following JSON structure: 

  • Name: Set the display name from the dynamic content. 

  • Content: Set the attachment content of the Get attachment contents from the dynamic content. 

               "Name": @{items('Apply_to_each_2')?['DisplayName']},   
               "Content": @{body('Get_attachment_content')}   

It is important to note that you should use the “Content” instead of “Content Bytes” to avoid any issue in sending attachments. Now you will get an email with attachments too. 

Step 5: In this final action, go to the advanced options and set the dynamic content from the approval attachments array. 



So, this is how we can easily send attachments without encountering any issues using the approval action. 

If you have any questions you can reach out our SharePoint Consulting team here.

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