[Limdep Nlogit List] Help with Error: 1085

[Bo Xu]

Hi,

I got the following error when submitting a clogit command in Limdep2.0:

Error:  1085: Unidentified name found in SUBDISTU(RAIL)=D0

The clogit command is as follows:

clogit;lhs=mode,nij,altij
;choices=a_dr, a_pass, transit, rail, walk
;Model:
U(a_dr)= A0 + A1*empst + A2*occ1 + A3*occ8 + A4*wkweek1 + A5*female + A6*age
+ A7*dweltp + A8*pinc + A10*nveh + A13*hinc + A14*trdist + A15*aivtt +
A22*aavail1 + A23*aavail5/
U(a_pass)= B0 + B1*empst + B2*occ1 + B3*occ8 + B4*wkweek1 + B5*female +
B6*age + B7*dweltp + B8*pinc + B10*nveh + B13*hinc + B14*trdist + B15*aivtt
+ B22*aavail1 + B23*aavail5 + B24*dlic/
U(transit)= C0 + C1*empst + C2*occ1 + C3*occ8 + C4*wkweek1 + C5*female +
C6*age + C7*dweltp + C8*pinc + C10*nveh + C13*hinc + C14*trdist +
C15*subdist + C16*t_time + C17*t_fare + C18*tavail1 + C19*dlic/
U(rail)= D0 + D1*empst + D2*occ1 + D3*occ8 + D4*wkweek1 + D5*female + D6*age
+ D7*dweltp + D8*pinc + D9*hhsize + D10*nveh + D13*hinc + D14*trdist +
D15*r_time + D16*r_fare + D17*lrdum + D18*aavail1 + D19*aavail5 +
D20*tavail1 + C21*dlic/
U(walk)= E1*aavail1 + E2*aavail5 + E3*tavail1 + E4*dlic$

Does anyone know what caused the error and how to fix it? It is noticed that
SUBDIST in the error is a variable in U(transit).

Thanks,
Bo