Schema-valid, but the receiver interprets the sign differently from the intention.
Cause
The direction of the transaction was put in the sign instead of in buySellId.
Fix
Amounts and quantities are always positive; the direction is in buySellId.
Wrong and right
Wrong
{ "buySellId": "buy", "tradeAmount": -250000.00 }
Right
{ "buySellId": "sell", "tradeAmount": 250000.00 }
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Attribution. Source: SIVI – VB-PUO Standard. Schemas, attribute descriptions and code lists are taken unchanged from the VB-PUO Standard (owned by the Pensioenfederatie, managed by SIVI) and shown with their release and version. Explanations, examples, error descriptions and translations are by WTP Data Lab and are not part of the standard. GitHub Stichting-SIVI/VBPUOdsk · Manual · sivi.org