BSP is the IATA Billing and settlement plan.
Basically, i.e. for BSP Germany, there are thousands of airlines and hundreds of airlines participating. Imagine each single agent needing to send money to each single airline in the world (i.e. somewhere in Africa) for tickets issued. Absolutely unpractical. To explain it quite basically, each German travel agent will receive a big invoice at the beginning of the month with all flight tickets issued for airlines member of the BSP Germany. And they will pay everything in one single sum on a german bank account of BSP. BSP will then transmit the money to the airlines involved. But for that the airline needs to be part of BSP Germany.
Most airlines do, but DY
doesn't. They only take part of Nordic countries BSP. This means that a i.e. Swedish travel agent can book and issue tickets for DY
in their GDS (reservation system), however countries out of the nordic ones (this can be spain, Germany, France, basically everywhere outside where DY
also flies) can't. Of course, people could still go online and book directly on their website and pay there, but in Europe this is often not done and not always practical for travel agents.
My point is - now that DY
will start longhaul - it would be more and more important that i.e. US agents can also sell a DY
ticket, or that i.e. a Spanish agent could sell a DY
-NYC... Which they can't through the BSP at the moment.
That said they're plannifiying to join other BSPs, but they are telling this since 2008 or so, so nobody really believes them concerning this anymore...
There are also other options that could be practical, but which are also not used. i.e. working together with another airline to use their ticket stocks. i.e. DY could cooperate with let's say LH and allow agents to issue DY flights on a LH ticket. Then the agent will be able to issue DY flights in every country where LH is a BSP member (which is basically everywhere in the world), and LH will invoice this to DY seperately in a second step. LH is just an exemple, and a bad one. Practically there are airlines specialized in this, especially Hahn Air (HR), which is officially an airline (I guess they even sell a 2 weekly flight from DUS to LUX on a Beech or something), but their main business is to allow a tons of exotic airlines, i.e. in Russia and Africa, to be issued on HR stock and thus allowing these little airlines not to bring all the requirements to join BSP themselves, but nevertheless be bookable through the GDS all around the world.
[Edited 2012-05-05 03:21:03]