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What is the best way to handle populating Custom Fields to and from API?

  • May 29, 2025
  • 1 reply
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N01ne

When I try to utilize custom fields in my API requests and larger flows, it creates issues every time. It seems to change the field name behind the scenes in some way (like ‘CUF: 1300040’ for example). I do not know how to program that into my requests and work around it. So, my API requests end up just passing that ‘CUF: 14000404’ data instead of anything else.

Best answer by rogerioaraujo

Hello ​@N01ne ,
When the request is sent with only the custom field ID, it means that the field is empty at the time of the request, with no information filled in.

A common approach is to use condition blocks to check whether the required field has been filled in before proceeding to an external request field. If it's empty, you'll need to go back and collect that information from the user, for example.

Feel free to share more details about your flow if you're unable to resolve it.

1 reply

rogerioaraujo
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  • Flow Scholar
  • 495 replies
  • Answer
  • May 30, 2025

Hello ​@N01ne ,
When the request is sent with only the custom field ID, it means that the field is empty at the time of the request, with no information filled in.

A common approach is to use condition blocks to check whether the required field has been filled in before proceeding to an external request field. If it's empty, you'll need to go back and collect that information from the user, for example.

Feel free to share more details about your flow if you're unable to resolve it.