SAVA CO-PA DEMO. Two proposed input schemas + two derived snapshots. Not SAP original exports or verified output layouts. Import IDs as Text; en-US amounts, trailing minus. Value-field signs differ from FI signed amounts. Do not sum ledgers or currencies. Company 1000 USD / 2000 EUR synthetic. Derived XLSX is a computed snapshot and does not auto-recalculate after editing raw inputs. Unmapped/ledger exclusions and row lineage are in co-pa.json. See app guide and Fields.