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OSS_CONSTRAINT_VIOLATED
OSS_CONSTRAINT_VIOLATED (0x80093011) is an OSS ASN.1 runtime result for ASN.1 constraint rejected the value. The value fails a range, size, permitted-alphabet, table, presence, or other constraint compiled from the schema. Because constraint text and generated type 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 actual value or length at the boundary, 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 ASN.1 constraint rejected the value 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 whether the constraint is extensible; 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 test the exact lower and upper bounds. A change in actual value or length at the boundary after reload, plugin replacement, restart, or schema deployment is evidence about runtime state, not permission to discard the reproducer. When whether the constraint is extensible 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 |
|---|---|
| constraint text and generated type | Locates the concrete message, allocation, module, or API boundary |
| actual value or length at the boundary | Separates payload-dependent behavior from build and process state |
| whether the constraint is extensible | Makes the comparison reproducible without rewriting the original artifact |
A controlled way to reproduce it
- test the exact lower and upper bounds
- run the generated constraint checker before encoding
- compare schemas on both communicating endpoints
What not to confuse it with: the result
Valid BER syntax does not make a value valid for its ASN.1 type; this status concerns abstract-value rules rather than tag/length parsing.
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 constraint text and generated type can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use actual value or length at the boundary 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 |
|---|---|
| test the exact lower and upper bounds | A changed outcome isolates the first proposed control instead of a blind retry |
| constraint text and generated type differs between success and failure | The difference localizes the ASN.1 constraint rejected the value 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
Correct the value or deploy the intended schema revision, then preserve positive and negative boundary cases. A recovery test built around test the exact lower and upper bounds 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 constraint text and generated type 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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