BAPI_MATERIAL_SAVEDATA error requiried field

[RicardoRomero_1]

Hello, there.

I'm using the BAPI_MATERIAL_SAVEDATA to change some materials. (Just want to change a unique field MARC-MFRGR).

The problem is the BAPI returns an error:

"The field MARC-MTVFP/BAPI_MARC-AVAILCHECK is defined as a required field; it does not contain an entry"

Strange things:

- The material is modified correctly despite the error.

- The material doesn't have created the view where this field (MARC-MTVFP) is located. 

If I go to MM02 and change the material it's ok, no error is showed. If I create the view where the field is located then I see the error in MM02. 

Why the bapi is returning an error message asking for a required field in a view that doesnt exist in the material?

The code I'm using is prety simple: 

  ls_headdata-material = p_ls_datos-matnr.

  ls_plantdata-plant      = p_ls_datos-werks.
  ls_plantdata-matfrgtgrp = p_ls_datos-mfrgr.

  ls_plantdatax-plant      = p_ls_datos-werks.
  ls_plantdatax-matfrgtgrp = abap_true.

  CALL FUNCTION 'BAPI_MATERIAL_SAVEDATA'
    EXPORTING
      headdata       = ls_headdata
      plantdata      = ls_plantdata
      plantdatax     = ls_plantdatax
    IMPORTING
      return         = ls_return
    TABLES
      returnmessages = lt_returnmessages.

Thanks in advance.

PS: We are using SAP ECC 6.0