Table EKBE clarification

Dear Experts ,

In table EKBE the field BEWTP - H Ct gives certain values .

1 AAf

2 AAfV

3 AnzV

A Anz

B NAbr

C NeuR

D Lerf

E WE

F BzWE

G BzRE

I BzKP

J RLfs

K KtoP

L Lfs

M BzRe

N NB-L

O LB

P NB-B

Q RE-L

R RE

S Sped

T VRe

U WA

W NeuB

X NB

Can anyone pls tell me what is the significance of each ??

Regards

Anis