Help in understanding a PCR

Question

Hi Experts
can any one help me in understanding what following PCR is doing?
ZERO=&TWPB VVVV Set zero
TABLEWPBP  Read table fields
VARGBAPZNR Tab.field VVVVV v.ky
  01
    NUM=01     Set
    ADDWT&TWPB VAR  Variable table
Regards,
Jignya

Answer 1

Hi Jignya,
Here is what each line of PCR does.
ZERO=&TWPB                                    --> Clears or initializes variable TWPB as blank
TABLEWPBP                                       --> Reads table WPBP
VARGBAPZNR                                    --> Reads field APZNR of table WPBP
  **                                                         --> Read value under APZNR field of table WPBP. For any other WPBP split for APZNR do nothing
  01                                                        --> For 01 WPBP split for APZNR split do the following as under this node
    NUM=01                                           --> Replace Number field and set it to 01 value
    ADDWT&TWPB                              --> Pass value from Number, Amount and Rate to variable TWPB. Here only Number will be filled by 01 value rest fields like Amount and Rate should be blank.
In short, variable TWPB is set to have Number field as 01 whenever WPBP split as in APZNR field is 01 otherwise variable will have nothing.
Thanks,
Ameet