I have a program written in C# that creates AdWords campaigns starting from
the creation of an Account and then adding campaigns, adgroups, ads,
keywords, configurations and more. It can be seen as a pipeline of
processes, one after the other, and it stops if a previous process fails.
At random points of the pipeline I'm constantly facing a
CONCURRENT_MODIFICATION error, and the description doesn't help much. It
not always fails but it occurs in more than 50% of the launches. This is
the description of the exception:
AdWordsApiException: One or more AdWords API errors have occurred. A
concurrency problem occurred as two threads were attempting to modify same
object.. (Error: DatabaseError.CONCURRENT_MODIFICATION, FieldPath: ,
Trigger: )
I haven't been able to determine the cause of the problem because (1) It
happens at different levels of the pipeline and (2) it is not a
multithreaded system, so there aren't other threads modifying the same
object.
How can I avoid this error? Thanks
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