Prenotification file (FPPNO run) format

Hi Experts,

I am able to generate the prenotification file using the transaction FPPNO.But its not in proper format.Generated File have empty space betweeen each character.

For exa. IF the header record is 101 1306120331J094101

Then its getting generated as 1 0 1 1 3 0 6 1 2 0 3 3 1 J 0 9 4 1 0 1

The same header record of the file when i open it from AL11 the spaces are getting replaced by '#'

Can you please help me with how i can remove these spaces from generated file.Is there any customisation need to be done in the following standard FMs

FKK_PRENOTE_ACH_00

FKK_PRENOTE_ACH_20

FKK_PRENOTE_ACH_30

FKK_PRENOTE_ACH_40

Thnx in advance,

Rahul