Error while creating a Characteristic Variable with Replacement Path

Question

Hi all,
    I am trying to create the Characteristic Variable ZVLOWDT (Low Date') with Replacement Path on characteristic ZSTARTDT (Start Date) and it gives the error 'Source to replace 'Low Date' is not defined.
   I have created a User Entry Variable VAR_DATE (Start Date) with interval like '01/01/2009 - 01/15/2009'  and  Customer Exit variable ZVCPDAY (does some calculation based on the input of VAR_DATE) on the same ZSTARTDT characteristic. I want to get the 01/01/2009 (lower range date of the selection) into this Characteristic Variable ZVLOWDT. We are in BI 7.0 and the following are it's properties:
General Tab:
Description: Low Date
Technical Name: ZVLOWDT
Type of Variable: Characteristic Value
Processing by: Replacement Path
Reference Characteristic: ZSTARTDT Start Date
Details Tab:
Variable Represents : Single value
Variable is: Mandatory
Variable is Ready for Input : unchecked
Replacement Path Tab: Replacement Rule
Replace Variable with : Variable
Variable : VAR_DATE
Replace with : KEY
Why I am getting this error, PLEASE ?
Thanks,
Venkat.

Answer 1

Hi Khaja,
   We could derive a Variable value from another Variable with out Customer Exit. There is a white paper.
First have the User Entry Variable (ZV_X) and it accepts the date range like '01/01/2009 - 01/31/2009'. Next create the Characteristic variable (ZV_Y) of Replacement Path for which source variable will be ZV_X and we could get the 'FROM Date' (01/01/2009) from the selection (ZV_X) into it (ZV_Y).
While creating the Characteristic variable (ZV_Y) of Replacement Path, I didn't find my newly created ZV_X variable in the list of available variables under 'Variable' header in 'Replacement Path' tab and it is causing the error  'Source to replace variable ZV_Y is not defined'. How could I create the Characteristic variable of Replacement Path, PLEASE ?
Thanks,
Venkat.