方法参数定义：
方法源代码：
METHOD GET_ORDER_ERROR_MESSAGE_OPT.
DATA:
ls_log_filter TYPE bal_s_lfil,
ls_extnumber TYPE bal_s_extn,
ls_object LIKE ls_extnumber,
ls_subobject LIKE ls_extnumber,
lt_log_header TYPE balhdr_t,
lt_allmsgs TYPE bal_t_msgh,
ls_msg TYPE bal_s_msg,
ls_log TYPE crmt_odata_task_logs,
ls_protype LIKE ls_extnumber.
FIELD-SYMBOLS: <order_guid> TYPE crmt_object_guid,
<msg_handler> LIKE LINE OF lt_allmsgs,
<log_header> LIKE LINE OF lt_log_header.
LOOP AT it_order_guid_tab ASSIGNING <order_guid>.
ls_extnumber-sign = 'I'.
ls_extnumber-option = 'EQ'.
ls_extnumber-low = <order_guid>.
APPEND ls_extnumber TO ls_log_filter-extnumber.
ENDLOOP.
ls_object-sign = ls_subobject-sign = ls_protype-sign = 'I' .
ls_object-option = ls_subobject-option = 'EQ'.
ls_object-low = 'CRM_DOCUMENT'.
APPEND ls_object TO ls_log_filter-object.
ls_subobject-low = 'SINGLE'.
APPEND ls_subobject TO ls_log_filter-subobject.
ls_protype-option = 'LE'.
ls_protype-low = '2'. " priority very important & important
APPEND ls_protype TO ls_log_filter-probclass.
CALL FUNCTION 'BAL_DB_SEARCH'
EXPORTING
i_s_log_filter = ls_log_filter
IMPORTING
e_t_log_header = lt_log_header
EXCEPTIONS
log_not_found = 1
no_filter_criteria = 2.
CHECK sy-subrc = 0.
CALL FUNCTION 'BAL_DB_LOAD'
EXPORTING
i_t_log_header = lt_log_header
IMPORTING
e_t_msg_handle = lt_allmsgs
EXCEPTIONS
no_logs_specified = 1
log_not_found = 2
log_already_loaded = 3.
CHECK sy-subrc = 0.
DATA: lt_logh TYPE bal_t_logh,
ls_mfil TYPE bal_s_mfil,
lt_cfil TYPE bal_t_cfil,
ls_cfil LIKE LINE OF lt_cfil,
lr_field LIKE LINE OF ls_cfil-t_range,
lr_level LIKE LINE OF ls_mfil-detlevel.
LOOP AT lt_log_header ASSIGNING <log_header>.
INSERT <log_header>-log_handle INTO TABLE lt_logh.
ENDLOOP.
lr_level-sign = 'I'.
lr_level-option = 'LE'.
* default level - employee, refer to FM CRM_ORDER_VALUE_RANGE_CHECK for detail
lr_level-low = '3'.
APPEND lr_level TO ls_mfil-detlevel.
ls_cfil-tabname = 'CRMT_MSG_CONTEXT'.
ls_cfil-fieldname = 'INACTIVE'.
lr_field-option = 'EQ'.
lr_field-sign = 'I'.
lr_field-low = space.
APPEND lr_field TO ls_cfil-t_range.
APPEND ls_cfil TO lt_cfil.
CALL FUNCTION 'BAL_GLB_SEARCH_MSG'
EXPORTING
i_t_log_handle = lt_logh
i_s_msg_filter = ls_mfil
i_t_msg_context_filter = lt_cfil
IMPORTING
e_t_msg_handle = lt_allmsgs
EXCEPTIONS
msg_not_found = 1
OTHERS = 2.
CHECK sy-subrc = 0.
LOOP AT lt_allmsgs ASSIGNING <msg_handler>.
CLEAR: ls_msg.
CALL FUNCTION 'CRM_MESSAGES_GET_MSG_INFO'
EXPORTING
is_msg_handle = <msg_handler>
IMPORTING
es_msg = ls_msg
EXCEPTIONS
OTHERS = 99.
CHECK sy-subrc = 0.
* message priority and message type are two different perspective so here we still need to filter by message type
CHECK ls_msg-msgty = 'E'.
CLEAR ls_log.
ls_log-msgid = ls_msg-msgid.
ls_log-msgno = ls_msg-msgno.
ls_log-msg_type = ls_msg-msgty.
READ TABLE lt_log_header ASSIGNING <log_header> WITH KEY log_handle = <msg_handler>-log_handle.
ASSERT sy-subrc = 0.
ls_log-header_guid = <log_header>-extnumber.
MESSAGE ID ls_msg-msgid TYPE ls_msg-msgty NUMBER ls_msg-msgno
WITH ls_msg-msgv1 ls_msg-msgv2 ls_msg-msgv3 ls_msg-msgv4 INTO ls_log-log_msg.
APPEND ls_log TO et_messages.
ENDLOOP.
ENDMETHOD.
用到的 Function Module BAL_GLB_SEARCH_MSG 介绍：
BAL_GLB_SEARCH_MSG 的参数包括 I_MSGID（消息 ID）、I_MSGNO（消息编号）、I_MSGV1 到 I_MSGV4（消息变量）、E_LOGNUMBER（日志编号）和 E_LOG_HANDLE（日志句柄）。当你使用这个 Function Module 查找消息时，你需要提供消息的 ID 和编号，你也可以选择性地提供消息变量。Function Module 会返回找到的消息的日志编号和日志句柄。
举个例子，假设你在运行某个 SAP 事务时遇到了一个错误消息，这个消息的 ID 是 ZMYMSGID，编号是 001，并且它有一个变量 VAR1。你可以使用 BAL_GLB_SEARCH_MSG 来查找这个消息：
DATA: lv_lognumber TYPE balloghndl,
lv_log_handle TYPE balloghndl.
CALL FUNCTION 'BAL_GLB_SEARCH_MSG'
EXPORTING
i_msgid = 'ZMYMSGID'
i_msgno = '001'
i_msgv1 = 'VAR1'
IMPORTING
e_lognumber = lv_lognumber
e_log_handle = lv_log_handle.
IF lv_lognumber IS INITIAL.
WRITE: '没有找到匹配的消息'.
ELSE.
WRITE: '找到了匹配的消息，日志编号是 ', lv_lognumber.
ENDIF.
在这个例子中，如果找到了匹配的消息，lv_lognumber 将会被赋予相应的日志编号。如果没有找到匹配的消息，lv_lognumber 将会保持初始值。
BAL_GLB_SEARCH_MSG 是一个非常有用的 Function Module，它可以帮助你在系统中查找特定的消息。但是，你需要注意的是，查找的范围可能会受到你的系统设置的限制。例如，如果你的系统设置为只保留一定时间内的日志，那么你可能无法找到更早期的消息。
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