Form 6252, Installment Sale Income, with ERS field descriptors.Field 2901 is shown on Form 6252, Line 1. Field 2902A is shown on Form 6252, Line 2a. Field 2902B is shown on Form 6252, Line 2b. Field 2907 is shown on Form 6252, Part I, Line 7. Field 2919 is shown on Form 6252, Part II, Line 19. Field 2921 is shown on Form 6252, Part II, Line 21. Field 2923 is shown on Form 6252, Part II, Line 23.