3818631 - Error in logs: "OTAHotelSearchRS Error_13_320 Invalid value - Invalid requester Id or Expecting RequestorID at OTAHotelSearchRQ"

When searching for a hotel via Roomit, I get an error message that says:

"No Hotels Found.
We could not find any hotels in our database that matched your criteria. Please click on the 'Previous' button and try to expand your search request.
You could try
1. Expanding the distance in the search radius
2. change the reference point around which your searching"

Failed to build the CliqServices format response from the OTA structs OTAHotelSearchRS Error_13_320 Invalid value - Invalid requester Id , KBA , CON-CA , Cross Applications , CON-MOB-TRV-HTL , Hotel , Problem