Consistency check

contributionAmount/withdrawalAmount and netAmount filled together

Symptom

Schema-valid; the receiver double-counts the flows or does not know which is leading.

Cause

Message 2 allows separate in- and outflow or a netted cashflow; both in one cohort is not intended.

Fix

Choose one form per chain and leave the other fields empty.

{ "contributionAmount": 25000.00, "withdrawalAmount": 10000.00, "netAmount": 15000.00 }

{ "contributionAmount": 25000.00, "contributionDate": "2026-09-15", "withdrawalAmount": 10000.00, "withdrawalDate": "2026-09-15" }

Check your own message for this and all other errors with the free validator: schema, code lists and consistency checks in one report.Validate a message