SAP Senior Developer interview questions

The whole process is just okay. Unfortunately, they choose the cheapest guy after 4 rounds interview. I received the call from a developer and take it on the next day. Then I was required to take interviews onsite. I took 3round for the whole afternoon. Each round have 2 tech workers with varied questions and coding. The last round is the manager and only focused on ur expected salaries. I asked a bit higher that i searched it after interviews.