SAP Developer Senior interview questions

The first usually begins with a one-on-one interview with a hiring manager. The interviewer typically asks questions about the candidate's qualifications, skills, work history, and relevant experience. After an initial in-person interview, a second interview is usually more in depth and may even be a technical interview. A second interview is to determine whether candidates are genuine contenders for the job and further reduce the pool of candidates.

I was supposed to sit for an interview for UI development but during the interview, the interviewer started asking me backend related questions. They rejected me saying they are looking for a UI developer who has knowledge of backend technologies as well. They could have simply stated at the beginning that they are looking for a "fullstack" developer.