Hi Vijay,
Did you provide proper access rules for that user in entity access. Have you provided create access
https://www.google.com/url?sa=t&source=web&rct=j&url=https://docs.mendix.com/refguide/access-rules/&ved=2ahUKEwj7td6ZlKH5AhVBRmwGHcqGCg8QFnoECA8QAQ&usg=AOvVaw0C76MyXEGkHAvUXUNX4tld