URGENT:calling subscreen in IA05 - Internal tab

Hi All

I have an urgent Requirement.

I need to upload data into SAP using transaction IA05.

In IA05 first we need to enter header data then operation data.

After entering data for particular operation then we need to select "Internal" tab to enter the data. In the "Internal" screen we need to enter “standard text Key” only.

If we manually enter data in “Internal” screen then a pop up screen is appearing. In that pop up we need to select "No" so that operation short text will not be replaced with standard text.

But when i do recording i am unable to see that pop up.

I have written the program with out the sub screen .But operation short text is getting replaced with standard text.

But in the program if i pass the subscreen name in the following way i am getting an error message stating that "Invalid OK Code NO".

perform bdc_field using 'BDC_SUBSCR'

'SAPLCPDI3300OPR_DETAIL'.

perform bdc_field using 'BDC_OKCODE'

'=NO'.

If any one have uploaded data using ‘IA05” kindly let me how to avoid overwriting of operation short text with standard text.

Points will be rewarded.

Thanks.