WRITE_FORM is invalid, OPEN_FORM is missing

Hi All,

I am getting the error no. TD423 with the error message 'WRITE_FORM is invalid, OPEN_FORM is missing'. I checked most of the discussions but coudln't get an answer yet.

This is what i did:

1. NACE setting:

  MEDIUM          PROGRAM             FORM Routine   Form        PDF/Smartform Form     TYPE

External Send - <Program Name> - ENTRY -             BLANK - <SMARTFORM Name> - SMARTFORM

2. Open the order in VA02

   - Extras -> Output -> Header - > Edit -> Added a entry

     Output TYpe     Desc     Medium               Funtion    Partner   Lang

      ZAK1               Order     External Send        SP        XXXX     EN 

3.  Extras -> Output -> Header - > Print Preview -> Slected the above entry -> Clicked in Preview

I am getting the error here.

Checked:

1. The sold-to had the email in XD03.

2. I Debugged the Print program -

    - It stopped at NAST-NACHA EQ 5. The CALL FUNCTION 'ADDR_GET_NEXT_COMM_TYPE' is returning SY-SUBRC = 5.

Can anyone please help me to find where the issue is?

Thanks in advance,

Karuna