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Question

Help with httpcaller and checking data

  • April 9, 2026
  • 1 reply
  • 28 views
spencergrazz
Contributor
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I am experiencing issues connecting to the USPS (Post Office) API using the HTTPCaller transformer. My objective is to query the API to validate ZIP codes and compare the results against a dataset I have uploaded into FME. I would also like to identify and flag any discrepancies between the ZIP codes returned by the API and those in my source data. I’m completely lost where i got it wrong. 

 

HTTPCaller (HTTPFactory): An error occurred while accessing the URL 'https://apis.usps.com'
The below feature caused the translation to be terminated
HTTPCaller_<Rejected> (TeeFactory): HTTPCaller_<Rejected>: Termination Message: 'HTTPCaller output a <Rejected> feature.  To continue translation when features are rejected, change 'Workspace Parameters' > Translation > 'Rejected Feature Handling' to 'Continue Translation''
 

    1 reply

    hkingsbury
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    • hkingsburyCelebrity
    • Celebrity
    • April 9, 2026

    On that feature, there will be some additional attributes that better detail what the problem is. Can you share what they are?

    You may need to add a Logger (to print those details to the log) or an Inspector (to open them in a new inspector window).

    Make sure you remove any api keys or passwords before sharing

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