We have a requirement to call an API after entering either of 2 input fields like Meter Order or Account Number. Also, in the same UI, there are input fields those need to prepopulate with the data from the API response. We are migrating from a legacy application to Pega. In the legacy application, …

Hello @HaripriyaR17725451 You can achieve your requirement using Search and Select single pattern in accordance with Form-refresh settings on the flow action where you have your form. Create a property of type data reference of single record and setup the Search and Select pattern where you can c…

If your object you are calling from an API is singular (e.g. show details of a single customer). The above works, it is the Data Reference pattern, this also works with other interaction patterns beyond the Search and Select display mentioned above. https://docs.pega.com/bundle/platform/page/platf…

Hi Marc, on your suggestion, we will only be able to display the API response in read only fields or will also allow user to edit or add details? All the examples give here are like selection kind off.

ok, i wasn’t aware you wanted to “Select and Update” a data reference, from the description I mistook that it was read only showing more data. Option 1: Form refresh settings. As outlined by @JayachandraSiddipeta above (thanks JC!) Option 2: Sepearate the screen into multiple assignments. Step 1 -…

Hi @MarcCheong , The experience we are looking for is based on the below existing screen: [image] User enters Meter# and Account # ,it is sent in API request, and the response holds address details which need to be prepopulated in the below Service and Billing address fields. These details shoul…

For me, meter and account are part of a Data Reference to whatever object holds the Service. A search and select would allow you to find the right service using those as fields then its just a choice of how to prefill/capture the addresses. I’d personally have it as the next step in a process, rath…

Call an API after user enters a value in an input field

User Experience

RameshSangili (Ramesh Sangili) April 27, 2026, 1:46pm 6

We have a similar use case and used a checkbox to trigger the API call, since users were confused when events from text fields only fired after tabbing out.

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Call an API after user enters a value in an input field

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