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HTTP_11 - Record already contains field , cannot write response header.

Pipeline origin is a polling HTTP Client. After some record manipulation stages another HTTP Client make a call to another endpoint which results in " HTTP_11 - Record already contains field , cannot write response header."

Note: the Second HTTP Client works fine in another "stand alone" pipeline.

  1. Would request help with this problem.
  2. The error message fails to say which field already exists. If it did, one might be able to figure it out. As it stands there are quite a few fields in the record.

Thanks.