Problem with Marketing Attribute value Deletion

Hi All,

i am trying to delete marketing attribute value from contact by using FM CRM_MKTBP_DEL_ATTR_BP_LIST But problem is that it is deleting complete Attribute Set. let suppose i have one marketing attribute set INDUSTRY and there are 3 values(IND01, IND02 & IND03) assigned to it now when i am trying to delete attribute value IND01 & IND02 from attribute set INDUSTRY then it is deleting the attribute set itself with all 3 values.

please see the below code and help.

PARAMETERS: test AS CHECKBOX DEFAULT ' '.

LOOP AT it_mark INTO wa_mark.

      ls_partner-partner_guid = lv_part_guid.

       ls_partner-partner = wa_mark-contact_id.

       APPEND ls_partner TO lt_partner.

CALL FUNCTION 'CRM_MKTBP_DEL_ATTR_BP_LIST'

         EXPORTING

           IV_MSA                    = 'X'

           IV_TEST                   = test

           iv_attribute_set          = wa_mark-attribute_set

           iv_attribut                  = wa_mark-atname

           IV_ATTRIBUTE_VAL  = wa_mark-atvalue

         TABLES

           it_partner                = lt_partner

           ET_RETURN           = lt_return.

endloop.

i also tried with below FM's but get same issue:

CRM_MKTBP_DEL_BP_LIST,

CRM_MKTBP_CHANGE_BP

Regards