Schema error 'must be equal to constant' on entityType, often followed by 'must contain at least 1 valid item' on the parent array.
Cause
Every entity carries a fixed entityType (default, sender, receiver, contact, pensionProvider, scheme, cohort, reportingPeriod, portfolio, pool, trade, payment, creditor, investmentDetails, corporateAction). A different spelling or capital makes the object unrecognisable.
Fix
Copy the entityType exactly from the schema.
Wrong and right
Wrong
{ "entityType": "Cohort" }
Right
{ "entityType": "cohort" }
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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
