Hi Gopi,
What parameters did you passed in DYNP_VALUES_READ? If you hard coded any values in below parameters try to use system variables instead of hard coding...
dyname = 'SAPLMEGUI'"'SAPLSZA1'
dynumb = '0014' "'0301'
Use system variables like below.
CALL FUNCTION 'DYNP_VALUES_READ'
EXPORTING
dyname = sy-cprog
dynumb = sy-dynnr
TABLES
dynpfields = h_dynpfields
EXCEPTIONS
OTHERS = 1.
Thanks,
Ashok.