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Duplicate POST

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Ryan Johnston

25 Aug, 2015 02:45 PM

I'm updating the sharpy client to include promotions (coupon codes).
https://github.com/SeanOC/sharpy (original)
https://github.com/SmartFile/sharpy (updates)

Occasionally, I get a 400 error about duplicate posts:

<?xml version="1.0" encoding="UTF-8"?>
<error id="24999971" code="400" auxCode="duplicate">Duplicate POST detected (1 seconds)</error>

These are definitely duplicate posts. The tests are posting the same data when creating customers.

What are the rules around duplicate posts?

What is the time limit between posts that is acceptable?
One knowledge base article mentioned 20 minutes (http://support.cheddargetter.com/discussions/problems/183-duplicate...).
Another said the limit was 10 seconds (http://support.cheddargetter.com/discussions/questions/4948-duplica...).

Is changing one field all that is necessary to work around this?

There is no information about the duplicate limit in the API documentation.
http://support.cheddargetter.com/kb/api-8/error-handling
https://cheddargetter.com/developers

Ryan Johnston
SmartFile

1. Support Staff 1 Posted by Marc Guyer on 25 Aug, 2015 07:16 PM

   

   Hi Ryan --

   What are the rules around duplicate posts?

   These endpoints are checked for duplicates:

   • customers/new
   • customers/edit
   • customers/edit-subscription
   • customers/add-charge
   • invoices/new

   The duplicate window is 10 seconds.

   Is changing one field all that is necessary to work around this?

   Yes. If any request param is different, it is not considered a duplicate. You could even send in an otherwise superfluous param with a random value if you want to workaround the duplicate check.

   There is no information about the duplicate limit in the API documentation.

   Thanks for pointing this out. I went ahead and added a section here: http://support.cheddargetter.com/kb/api-8/error-handling#duplicate

   • Edit

2. 2 Posted by Ryan Johnston on 25 Aug, 2015 07:25 PM

   

   Thanks.

   I like the random superfluous parameter for the unit tests.

   • Edit

3. Ryan Johnston closed this discussion on 25 Aug, 2015 07:25 PM.