Tracking changes in values using ENABLE_CONTEXT_CHANGE_LOG( ) or other API

I have a requirement to know what was the last value of the attribute of an element (that belongs to a node)
IN other words I want to compare old values with new values whenever an event is trigerred and if values are different then initiate a logic
I am not able to find any APIs for it. If any one has worked on the above method or any relevant API
please help me
Thanks

Gaurav Singh wrote:
I have a requirement to know what was the last value of the attribute of an element (that belongs to a node)
> IN other words I want to compare old values with new values whenever an event is trigerred and if values are different then initiate a logic
you can declare attribute in your Attributes section of View lets say gt_old_value (of type z_old_value)
it_new_value = wd_this->gt_old_value. "Assign old value to new value internal table
logic to compare old valeus with new values and then store old valeus as below,
wd_this->gt_old_value = it_new_value.
Thanks,
Chandra

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DATA: LT_E1CUVAL TYPE TABLE OF E1CUVAL.
DATA: WA_E1CUVAL TYPE E1CUVAL.
DATA: LS_CFG_HEAD LIKE CUXT_CUCFG_S,
 LS_INSTANCES LIKE CUXT_CUINS_S,
 LS_VALUES LIKE CUXT_CUVAL_S,
 LS_E1CUCFG LIKE E1CUCFG,
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 LS_E1CUVAL LIKE E1CUVAL,
 LS_PROFILE LIKE E1CUCOM,
 LS_VBAP LIKE VBAP,
 L_CUOBJ LIKE INOB-CUOBJ,
 L_ATINN LIKE CABN-ATINN.
DATA: LT_INSTANCES LIKE CUXT_CUINS_S OCCURS 0,
 LT_PART_OF LIKE CUXT_CUPRT_S OCCURS 0,
 LT_VALUES LIKE CUXT_CUVAL_S OCCURS 0,
 LT_VAR_KEYS LIKE CUXT_CUVK_S OCCURS 0,
 LT_KSML LIKE KSML OCCURS 0 WITH HEADER LINE,
 BEGIN OF LT_CLINT OCCURS 0,
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 END OF LT_CLINT.
DATA: LT_CUIB LIKE CUIB_CUOBJ_S OCCURS 0 WITH HEADER LINE.
DATA: E_ROOT_INSTANCE TYPE CUXT_INSTANCE_NO.
DATA: EV_ROOT_PERSIST_ID TYPE IBEXTINST_DATA-EXT_INST_ID.
DATA: EV_CFG_HAS_CHANGED TYPE XFELD.
DATA: EV_HANDLE_APPL_LOG TYPE BALLOGHNDL.
DATA: L_CUOBJ_NEW TYPE CUOBJ.
DATA: L_OWNER TYPE IBXX_BUSINESS_OBJECT.
REFRESH LT_E1CUVAL.
CLEAR LS_VBAP.
SELECT SINGLE CUOBJ INTO CORRESPONDING FIELDS OF LS_VBAP
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IF SY-SUBRC <> 0.
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ENDIF.
REFRESH LT_CUIB. CLEAR LT_CUIB.
LT_CUIB-INSTANCE = LS_VBAP-CUOBJ.
APPEND LT_CUIB.
CALL FUNCTION 'CUCB_INITIALIZER'
 EXPORTING
 IT_INSTANCES = LT_CUIB[].
CALL FUNCTION 'CUXI_GET_SINGLE_CONFIGURATION'
 EXPORTING
 I_ROOT_INSTANCE = LS_VBAP-CUOBJ
 IMPORTING
 E_CFG_HEAD = LS_CFG_HEAD
 ES_PROFILE = LS_PROFILE
 ET_RETURN = ET_RETURN
 TABLES
 E_TAB_INSTANCES = LT_INSTANCES
 E_TAB_PART_OF = LT_PART_OF
 E_TAB_VALUES = LT_VALUES
 E_TAB_VAR_KEYS = LT_VAR_KEYS
 EXCEPTIONS
 INVALID_INSTANCE = 1
 NO_ROOT_INSTANCE = 2
 INSTANCE_IS_A_CLASSIFICATION = 3
 INTERNAL_ERROR = 4
 NO_PROFILE_FOUND = 5
 INVALID_DATA = 6
 OTHERS = 7.
IF SY-SUBRC <> 0.
 CASE SY-SUBRC.
 WHEN 1.
 RAISE INSTANCE_NOT_FOUND.
 WHEN 3.
 RAISE INSTANCE_IS_A_CLASSIFICATION.
 WHEN OTHERS.
 RAISE INVALID_DATA.
 ENDCASE.
ELSE.
 LOOP AT LT_VALUES INTO LS_VALUES.
 IF LS_VALUES-CHARC = 'SAP_MILLCA_PACKAGING'
 OR LS_VALUES-CHARC = 'PD_CA_PACKING_DM'.
 LS_VALUES-VALUE = '7100010'. "This is test data
 MODIFY LT_VALUES FROM LS_VALUES.
 ELSE.
 DELETE LT_VALUES WHERE CHARC = LS_VALUES-CHARC.
 ENDIF.
 CLEAR LS_VALUES.
 ENDLOOP.
ENDIF.
영업정보 특성 변경
CALL FUNCTION 'CUXI_SET_SINGLE_CONFIGURATION'
 EXPORTING
 I_CFG_HEADER = LS_CFG_HEAD
 I_ROOT_INSTANCE = LS_VBAP-CUOBJ
 I_PLANT =
 I_STRUCTURE_EXPLOSION_DATE =
 I_STRUCTURE_EXPLOSION_APPL_ID =
 I_LOGSYS =
 IS_PROFILE = LS_PROFILE
 IV_ONLY_SINGLE_LEVEL =
 IV_HANDLE_APPL_LOG =
 IV_OBJECT_APPL_LOG = 'CIF'
 IV_SUBOBJECT_APPL_LOG = 'T_CNFG'
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 E_ROOT_INSTANCE = E_ROOT_INSTANCE
 EV_ROOT_PERSIST_ID = EV_ROOT_PERSIST_ID
 EV_CFG_HAS_CHANGED = EV_CFG_HAS_CHANGED
 EV_HANDLE_APPL_LOG = EV_HANDLE_APPL_LOG
 ET_RETURN = ET_RETURN
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 I_TAB_INSTANCES = LT_INSTANCES
 I_TAB_PART_OF = LT_PART_OF
 I_TAB_VALUES = LT_VALUES
 I_TAB_VAR_KEYS = LT_VAR_KEYS
 I_TAB_BLOB =
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 OTHERS = 8
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 WHEN 3.
 RAISE INVALID_INSTANCE .
 WHEN 3.
 RAISE INSTANCE_IS_A_CLASSIFICATION.
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 WHEN OTHERS.
 RAISE INVALID_DATA.
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ENDIF.
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save configuration with next commit
CLEAR: LS_INSTANCES.
READ TABLE LT_INSTANCES INTO LS_INSTANCES INDEX 1.
L_OWNER-OBJECT_TYPE = LS_INSTANCES-OBJ_TYPE.
L_OWNER-OBJECT_TYPE = 'PVS_POSVAR'.
L_OWNER-OBJECT_KEY = LS_INSTANCES-OBJ_KEY.
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 INVALID_ROOT_INSTANCE = 2
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IF SY-SUBRC > 1 AND SY-SUBRC <> 3.
 CLEAR LS_VBAP-CUOBJ.
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ELSEIF SY-SUBRC = 1.
 LS_VBAP-CUOBJ = L_CUOBJ_NEW.
ENDIF.
What's wrong?
help me to solve this problem.
Thanks a lot.

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Tracking changes in values using ENABLE_CONTEXT_CHANGE_LOG( ) or other API

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