Error: The request could not be executed: unable to parse response data.

[omelhus]

I'm getting this error when updating orderlines in a batch-request. It's only one item in the batch that fails. The trace id is 0000000000000000f9fa0c783b96d593.

Can you have a look?

[Marius Bancila]

This problem is now fixed. When you got this message, the problem was a row locked by other process. There was an error in our parsing of this response from the backend. 

[Marius Bancila]

We have enabled some extra logging. If you reproduce the error we would probably get more information about the cause.

[Marius Bancila]

There is no meaningful info in the logs, but the error indicates that there is a problem reading the answer from the backend. It's curious that you have two identical requests in the batch, with different args, and only the second fails. Also, if I am executing the same query I am not getting errors. 

Did you try to execute the second request that fails normally, not as part of a batch and see if you get the same problem?