SAP MDG · VALIDATION DERIVATION
How do I implement SAP MDG BAdI USMD_RULE_SERVICE method CHECK_CREQUEST_HIERARCHY for change request hierarchy validation?
Create the BAdI implementation in SE19, assign an ABAP class that implements IF_EX_USMD_RULE_SERVICE, and place your hierarchy validation in the relevant rule-service method. In the provided source, CHECK_CREQUEST_HIERARCHY is intentionally empty and kept only as a compatibility hook.
Create the BAdI implementation in SE19, assign an ABAP class that implements IF_EX_USMD_RULE_SERVICE, and place your hierarchy validation in the relevant rule-service method. In the provided source, CHECK_CREQUEST_HIERARCHY is intentionally empty and kept only as a compatibility hook.
Create the BAdI implementation in SE19 after checking USMD_RULE_SERVICE in SE18, then assign an implementing class that uses IF_EX_USMD_RULE_SERVICE. The provided class keeps IF_EX_USMD_RULE_SERVICE~CHECK_CREQUEST_HIERARCHY empty as a retained framework hook, so you can add CR-hierarchy validation there when your business rule requires it.
Process flow
- Open SE18 and display BAdI definition
USMD_RULE_SERVICE. - Check interface IF_EX_USMD_RULE_SERVICE, multiple-use/single-use, and filter dependency.
- Open SE19 and create the BAdI implementation.
- Assign implementation name, short description, package, and transport request.
- Maintain filters if the implementation is filter-dependent.
- Create or assign the implementing class and implement IF_EX_USMD_RULE_SERVICE.
- Place hierarchy validation in CHECK_CREQUEST_HIERARCHY or entity validation in CHECK_ENTITY as appropriate.
- Activate the class first, then activate the BAdI implementation and dependent objects like message classes.
Referenced tables
| Object | Purpose |
|---|---|
USMD_S_MESSAGE | Message structure used to return validation messages from the rule-service BAdI. |
USMD1_CS_MSGTY | Severity constants for validation messages, including error, warning, and info. |
ILLUSTRATIVE ABAP SAMPLE
Source ABAP implementation example
Concrete CHECK_ENTITY implementation pattern from the same knowledge document set.
1METHOD if_ex_usmd_rule_service~check_entity.
2 DATA: lo_app_context TYPE REF TO if_usmd_app_context,
3 lt_message TYPE usmd_t_message,
4 ls_message TYPE usmd_s_message,
5 lv_crtype TYPE usmd_crequest_type,
6 lv_crstep TYPE usmd_crequest_appstep,
7 lv_crid TYPE usmd_crequest.
8
9 FIELD-SYMBOLS: <ls_data> TYPE any,
10 <lv_value> TYPE any.
11
12 lo_app_context = cl_usmd_app_context=>get_context( ).
13 CHECK lo_app_context IS BOUND.
14 CHECK io_model->d_usmd_model = 'BP'.
15
16 lo_app_context->get_attributes(
17 IMPORTING
18 ev_crequest_type = lv_crtype
19 ev_crequest_step = lv_crstep
20 ev_crequest_id = lv_crid ).
21
22 CHECK it_data IS NOT INITIAL.
23
24 LOOP AT it_data ASSIGNING <ls_data>.
25 ASSIGN COMPONENT 'SOME_MAND_FIELD' OF STRUCTURE <ls_data> TO <lv_value>.
26 IF <lv_value> IS ASSIGNED AND <lv_value> IS INITIAL.
27 CLEAR ls_message.
28 ls_message-msgid = 'ZMDG_SUPPL'.
29 ls_message-msgno = '001'.
30 ls_message-msgty = 'E'.
31 ls_message-fieldname = 'SOME_MAND_FIELD'.
32 APPEND ls_message TO et_message.
33 ENDIF.
34 ENDLOOP.
35
36 IF et_message IS NOT INITIAL.
37 zcl_mdgbp_bp_validation=>adjust_messages(
38 EXPORTING
39 cr_number = lv_crid
40 CHANGING
41 ct_message = et_message ).
42 ENDIF.
43ENDMETHOD.The remaining configuration, implementation details, and testing guidance continue from this answer more…
Related questions and keywords
Alternative questions
- How do I add validation logic in IF_EX_USMD_RULE_SERVICE~CHECK_CREQUEST_HIERARCHY?
- What is the implementation approach for CHECK_CREQUEST_HIERARCHY in SAP MDG?
- How do I activate a BAdI implementation for
USMD_RULE_SERVICEhierarchy checks?
Possible questions
- How do I implement SAP MDG BAdI
USMD_RULE_SERVICEmethod CHECK_CREQUEST_HIERARCHY for change request hierarchy validation? - What is the step-by-step SE18/SE19 process for a
USMD_RULE_SERVICEimplementation? - How do I write ABAP validation logic in an MDG rule-service BAdI and keep the hierarchy hook active?
- How do I implement CHECK_CREQUEST or CHECK_CREQUEST_HIERARCHY in SAP MDG?
- How do I create a BAdI implementation and class for IF_EX_USMD_RULE_SERVICE?