Bad Format in Kafka Topic getOffers

[CarstenWalther]

Events from the topic getOffers are missing a value for product_id,

{"product_id": , "http_code": 200, "timestamp": "2018-07-06T15:33:23.425Z"}

This results in an warning in benchmark.py: "Failed to dump kafka topic getOffers"
Do we even need this topic?

[Bouncner]

Cannot access the code right now. What do we store in getOffer? Is this the storage of market situations when somebody requests an offer (i.e., a market situation?!?!)?