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OSS_TABLE_MISMATCH
OSS_TABLE_MISMATCH (0x8009301D) is an OSS ASN.1 runtime result for requested type absent from the active control table. The type being encoded is not defined by the generated table attached to the current runtime context. Because symbolic type and numeric selector 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 schema module used to generate the table, then separate the encoded value from generated artifacts, call arguments, and the runtime package actually loaded by the process.
Locate the exact codec boundary
At the requested type absent from the active control table 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 control table identity chosen at runtime; otherwise an outer certificate or security wrapper may hide the useful codec result behind a generic failure.
Keep the original bytes or object graph unchanged while testing encode a type known to exist in that table. A change in schema module used to generate the table after reload, plugin replacement, restart, or schema deployment is evidence about runtime state, not permission to discard the reproducer. When control table identity chosen at runtime points to one message, retain a cryptographic hash and the smallest safe sample instead of logging certificate, subscriber, credential, or private-key material.
Evidence worth preserving
| Record | Diagnostic value |
|---|---|
| symbolic type and numeric selector | Locates the concrete message, allocation, module, or API boundary |
| schema module used to generate the table | Separates payload-dependent behavior from build and process state |
| control table identity chosen at runtime | Makes the comparison reproducible without rewriting the original artifact |
A controlled way to reproduce it
- encode a type known to exist in that table
- compare generated headers with the loaded control artifact
- look for cross-module context reuse
What not to confuse it with: the result
PDU_RANGE rejects a selector outside the top-level range; TABLE_MISMATCH often exposes a valid application type paired with the wrong generated table.
Instrumentation
Record the full 32-bit HRESULT and lower OSS return number together with operation direction, symbolic PDU, encoding rule, byte count, and generated-table identifier. Where symbolic type and numeric selector can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use schema module used to generate the table together with OSS module paths and versions logged once per process so packaging differences can be correlated without flooding normal diagnostics.
Decision matrix
| Controlled observation | Conclusion it supports |
|---|---|
| encode a type known to exist in that table | A changed outcome isolates the first proposed control instead of a blind retry |
| symbolic type and numeric selector differs between success and failure | The difference localizes the requested type absent from the active control table boundary before unrelated settings are changed |
| An independent decoder accepts the same artifact | Inspect generated schema, selected rules, ABI, and optional OSS modules before declaring the bytes invalid |
| A fresh control object changes the outcome | Investigate initialization, lifecycle, allocator ownership, configuration mutation, and concurrent access |
Exit criteria: the result
Route each generated value to its matching control context and deploy schema artifacts atomically. A recovery test built around encode a type known to exist in that table should replay the same operation under the same schema and encoding rule, retain one deliberately invalid control, and verify ownership and cleanup after both outcomes. Success after an unexamined retry is not proof that symbolic type and numeric selector now satisfies the codec contract.
Technical references
- Microsoft: OSS ASN.1 HRESULT definitions
- OSS Nokalva: encoder/decoder return codes
- OSS Nokalva: runtime functions and control initialization
- Relevant ASN.1 specification or runtime detail
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