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OSS_OPEN_TYPE_ERROR
OSS_OPEN_TYPE_ERROR (0x8009302C) is an OSS ASN.1 runtime result for automatic open-type processing failed. The runtime could not automatically encode, decode, copy, or resolve an ASN.1 open type whose concrete type depends on surrounding object-set information. Because governing OID or unique key is central to this condition, Microsoft’s HRESULT range and the OSS Nokalva return-code documentation should be read together. Start the investigation by recording information object set and table used for lookup, then separate the encoded value from generated artifacts, call arguments, and the runtime package actually loaded by the process.
Where processing stopped
At the automatic open-type processing failed boundary, capture the first OSS function returning the value and note whether the operation was encode, decode, copy, compare, constraint validation, or trace setup. Preserve the selected PDU, encoding rules, and raw open-type bytes and selected concrete type; otherwise an outer certificate or security wrapper may hide the useful codec result behind a generic failure.
Isolation sequence
- Test the discriminator with a known registered value
- decode the raw field separately only for diagnosis
- Verify object-set extensions are present on both sides
Facts that change the conclusion
- governing OID or unique key
- information object set and table used for lookup
- raw open-type bytes and selected concrete type
Similar names, different faults: the result
An open type may be well-formed bytes yet still fail because its discriminator has no matching type or the automatic copy/compare callback fails.
Instrumentation
Where governing OID or unique key can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use information object set and table used for lookup together with OSS module paths and versions logged once per process so packaging differences can be correlated without flooding normal diagnostics.
Completion check: the result
Align the discriminator table with the schema and preserve an unknown-extension test that follows the protocol’s rules.
Technical references
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