Scenario: Adding Budget Addresses to Existing Cover Groups 
In the budget planning phase, an organization has created several commitment items (used in budget addresses) for its planned expenditures. The organization has assigned these budget addresses to cover groups using the mass generation of cover groups (transaction FMCEGENCG), together with a specific derivation strategy for generating cover groups (cover eligibility rules). In this scenario, however, it becomes necessary to create a new commitment item during the fiscal year, for use in new budget addresses that must be included in existing cover groups.
For these reasons, you may have to carry out the following steps in your productive system:
You must ensure that the budget addresses with the new commitment item exist in the budget structure you defined.
You can change the existing cover groups manually using the transaction FMCERULE and add the new budget addresses to be included. However, you can also use the mass generation of cover groups, transaction FMCEGENCG, to include these new budget addresses in the corresponding cover groups.
Before you do so, you may first have to update the derivation strategy for generating cover groups. In a productive system it is only possible to change the corresponding derivation rules in transaction FMCERGR, for example, by adding further account assignment elements.
Note
If you create a new commitment item, you can add new budget addresses with this commitment item to automatic CE rules, without subsequently reconstructing your AVC ledgers (transaction FMAVCREINIT). In this case, no application data (budget or consumption data) exists so far for these new budget addresses.