Ya Thangaraj
In Schema "A2003" is a function which takes Input "P2003"
Function A2003: does the following:
Input:
P2003
Processing:
Substitutions Processing
Output:
TIP, ALP,C1
you may ask y the function is named "A2003" while other functions like "P2001" uses prefix "P" its just naming. No Specific purpose for that.
one reason why SAP adopted prefix A might be that, A2003 function wont process all the substitutions, it only processes position substitutions, other substitutions are processed in PSP.
since its not doing entire substitution work, SAP might have adopted different Prefix.
what you need to remember is difference between A2003 & P2003
hope, u got the answer.
if you got the answer pls close the thread by marking the correct answer.
Ciao