Hello,
I'm having a strange issue. I'm trying to upload bid changes using the
AdWords API and the API is responding with the CONCURRENT_MODIFICATION
error. However, I have verified the following things:
- My request does not contain any duplicate entities. There are
duplicate criterionIds, but they have different adGroupIds.
- POST parallelization shouldn't be an issue because our chunk size of
2000 and there are only about 1800 changes in the request.
- Based on the Change History in the AdWords interface, there are no
other changes being made to the account at the time of the request.
I experimented with this a bit to try to find the cause, but was
unsuccessful. However, I will report my findings here in case they help:
- I've tried making this request at different times of the day and saw
the same result.
- If I try to make the same changes, but through a manual tsv file
upload instead of through the API, the upload is successful.
- I changed my chunk size to 10 and all ~180 requests were successful.
- I changed my chunk size to 1000 and the first request was successful,
but the last one was not.
- I have the request id for the failed request in this case, not sure
if that's something safe to share publicly.
Any ideas? Please let me know if you need more information.
Thank you,
Aaron Cheshire
P.S. I tried to undo the successful 1000 bid changes that I made during my
experimentation (the UNDO button is present) and I get the message that
"These changes can't be undone." I would also like to know why these can't
be undone (I tried only seconds after the changes were made). Maybe this is
related? Not sure.
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