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Question

Add Custom Button on the Sales Order Screen Payments Tab

  • March 16, 2026
  • 4 replies
  • 72 views

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Hello,

Can you please help me add a custom button on the Payments tab of the Sales Order screen?
In which extension should the new button be created?
When I try to add it in the Sales Order extension, I get the following error message.

 

4 replies

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  • Jr Varsity I
  • March 16, 2026

I don’t see any code snippets, what part are you getting stuck on? Did you create the action and you are just trying to add it to the Payment tab instead of the header?


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  • Pro III
  • March 17, 2026

@Vard86 

The error Sequence contains no matching element on SO301000.aspx is usually caused by a mismatch between ASPX and DAC/view (e.g., incorrect DataField or missing DataMember) or due to null data.

Could you please share your customization/code changes so we can help identify the exact issue?


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  • Semi-Pro III
  • March 17, 2026

Hi ​@Vard86 can you also provide a little more information on what you want the button to do? Is it supposed to navigate you to an external site, or start a workflow?


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  • Author
  • Varsity I
  • March 18, 2026

This issue occurred when I was trying to add the button from the customization project. I added it directly in the ASPX, and the issue was resolved. However, I didn’t understand why it wasn’t possible to add it through the customization project.