If you are working with multiple connected systems and did not consolidate the financial object keys during the initial load phase, key mapping may be required.

You can define the system-specific mappings for the key value for financials in Customizing for Master Data Governance under  Master Data Governance, Central Governance General Settings Key Mapping .

The mapping definitions of the key mappings can be conducted by any authorized user on the productive MDG system using the business transaction from the portal or the corresponding back-end transaction.