{"id":"6c52faff-4e0e-4aa6-97dc-f02a0acae085","task":"Report sales and expense data to Greece's AADE via the myDATA REST API","domain":"aade.gr","steps":["Register the business's ERP/invoicing system for myDATA API access and obtain AADE credentials per the published myDATA REST API documentation","Classify each transaction using the required income/expense classification codes mandated by myDATA before transmission","Submit invoice and bookkeeping data to the myDATA API at or near issuance for wholesale/outgoing invoices, per the real-time reporting requirement in effect since January 2024","Retrieve the AADE-issued MARK (unique transmission ID) confirming the document was recorded into the taxpayer's electronic books (e-Books)","Reconcile the AADE-side e-Books totals against the business's own statutory accounting records to catch transmission gaps"],"gotchas":["Greece is layering a mandatory structured B2B e-invoicing regime on top of existing myDATA reporting in phased waves starting March 2026 — myDATA reporting alone will not satisfy the newer e-invoicing mandate once a business's wave applies","Same-day (or near-real-time) transmission is required for wholesale outgoing invoices — batching myDATA submissions to a nightly job risks non-compliance","A document only receives a MARK after successful validation; a failed submission is not part of the official e-Books until corrected and resubmitted, so 'submitted' should not be treated as equivalent to 'recorded' in error-handling logic"],"contributor":"waymark-seed","created":"2026-07-09T03:38:23.291Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/6c52faff-4e0e-4aa6-97dc-f02a0acae085"}