Error in Adobe Forms

Question

HI,
I`m designing a function module to print Adobe Forms.
When i execute the code below in a report program the pdf is returned o.k. but in the function module the return code is
message FPRUNX 102 Job already started.
This is my code, in the simplest way.
function zic_no_genera_pdf.
""Interfase local
*"  IMPORTING
*"     REFERENCE(IM_PLANT) TYPE  FPNAME
*"  EXPORTING
*"     VALUE(EX_PDF) TYPE  FPCONTENT
  constants: fk_true(1)  type c value 'X',
             fk_false(1) type c value ' ',
             fk_pdf(3)   type c value 'PDF'.
  data: f_formname       type rs38l_fnam,
        f_adfname        type fpname,
        f_docparams      type sfpdocparams,
        f_outputparams   type sfpoutputparams,
        f_formoutput     type fpformoutput,
        f_joboutput      type sfpjoboutput.
  f_outputparams-dest = fk_pdf.  
  f_outputparams-nodialog = fk_true.
  f_outputparams-preview = fk_false. 
  f_outputparams-getpdf = fk_true. 
  call function 'FP_JOB_OPEN'
    changing
      ie_outputparams = f_outputparams
    exceptions
      cancel          = 1
      usage_error     = 2
      system_error    = 3
      internal_error  = 4
      others          = 5.
  if sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  endif.
  call function 'FP_FUNCTION_MODULE_NAME'
    exporting
      i_name     = im_plant
    importing
      e_funcname = f_formname.
  if sy-subrc <> 0.
  endif.
  f_docparams-langu   = 'S'.
  f_docparams-country = 'ES'.
  f_docparams-dynamic = fk_true.
  call function f_formname
    exporting
      /1bcdwb/docparams  = f_docparams
    importing
      /1bcdwb/formoutput = f_formoutput
    exceptions
      usage_error        = 1
      system_error       = 2
      internal_error     = 3.
  if sy-subrc <> 0.
    message id sy-msgid type sy-msgty number sy-msgno
            with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  endif.
  call function 'FP_JOB_CLOSE'
    exceptions
      usage_error    = 1
      system_error   = 2
      internal_error = 3
      others         = 4.
endfunction.
Can anyone help me? ¿Why this happens?
Thanks in advance.

Answer 1

Sap Note 858325
The test should be carried out using a program that in turn calls the function module to be tested.
This is because in se37 the functions modules FP_JOB_OPEN and FP_JOB_CLOSE are called automatically