Alpha IN/OUT to Handle Leading Zeros in SAP ABAP

 In SAP we use SHIFT keyword to delete leading zero's. Keyword is:

SHIFT Variable LEFT DELETING LEADING '0'.

 SHIFT Variable RIGHT DELETING LEADING '0'.

We can also delete & add these zero's using new ABAP syntax.

FM: 

'CONVERSION_EXIT_ALPHA_OUTPUT'

'CONVERSION_EXIT_ALPHA_INPUT'

DATA int_val TYPE char10 VALUE '0000012345'.
DATA Chng_val TYPE char10.

CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' 
  EXPORTING
    input  = int_val
  IMPORTING
    output = Chng_val.

Final result: 12345 

DATA Chng_val TYPE char10 VALUE '12345'.
DATA int_val TYPE char10.

CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT' 
  EXPORTING
    input  = Chng_val
  IMPORTING
    output = int_val.

 Final result:  0000012345