The definition of the update rules depends on the information structure and update group.

Update rules consist, for example, of the source field, the event which triggers the update, requirements and formulas. Once you have defined the update rules, the corresponding update programs are automatically generated.

Process of maintaining update Rules -

1. In the "Info structure" field, specify the name of the info structure for which you would like to maintain the update rules.
2. Allocate an update group to the information structure in order to establish an application-specific reference and press enter.
3. Define the individual update rules.
4. For the key figures define the event of updating as well the type of updating. 
5. Proceed in the same way for the other key figures.
6. When you have defined the update rules for all key figures and characteristics, save these update rules.
7. Before the generation, all of the update rules are checked for consistency. Possible inconsistencies are documented in a log and generating is canceled.

For examples :- 

Update rule describes the update for the event "Item category". Here, the key figure is updated from special source information every time a new document is generated in the system.

Please go to transaction "MC1B", here you define your requirement.

When you will be creating update rule. assign this requirement in Update definition transaction "MC24".

In the above requirement you can add the filter, you will have to get ABAP consultant's Opinion and help to write this requirement.

SAP SD Books :-
SAP Sales and Distribution, Interview Questions, Certification and Configuration Books

Goto:
SAP SD Pricing

Goto:
Billing / Shipping

Back to :-
SAP SD (Sales and Distribution) Configuration Hints and Tips

Return to :-
SAP ABAP/4 Programming, Basis Administration, Configuration Hints and Tips