How can I change segments in an existing chart of accounts structure?

The chart of accounts structure and structure instance are fundamental constructs in General Ledger accounting setup and can't be altered once they're used. The number of segments, the segments' order, each segment's label, length, type, and value set assignment can't be updated.

These components set the foundation upon which accounting data is recorded for ledgers that use them. Careful and thoughtful planning must precede all decisions pertaining to defining the chart of accounts.