What does HRESULT 0x80040E9D (DB_E_ALTERRESTRICTED) mean?

 
Previous Next
DB_E_NOSTATISTIC DB_E_RESOURCENOTSUPPORTED

DB_E_ALTERRESTRICTED

Column or table could not be altered because it is referenced by a constraint

Exact value and result class

DB_E_ALTERRESTRICTED has unsigned value 2147749533 (0x80040E9D) and signed 32-bit value -2147217763. AllStat describes it as “Column or table could not be altered because it is referenced by a constraint”. In this result, a table or column alteration is blocked because an existing constraint references the target.

The high bit is set, so DB_E_ALTERRESTRICTED is a failure HRESULT. Its facility is 4 (FACILITY_ITF) and its low code is 3741 (0x0E9D). For DB_E_ALTERRESTRICTED, these fields identify an interface-defined result family; they do not identify the provider instance, method, object generation or partial effects.

Contract boundary

For DB_E_ALTERRESTRICTED, OLE DB DDL interfaces identify indexes, commands and constraints with provider-scoped DBIDs. For DB_E_ALTERRESTRICTED, constraint descriptors also carry type, column arrays, match behavior, deferrability and update/delete rules that must agree as one structure.

Investigation of DB_E_ALTERRESTRICTED should start with the session performing DDL, target table metadata and the exact DBID or DBCONSTRAINTDESC supplied. Capture DB_E_ALTERRESTRICTED before ADO, ATL, .NET or a database abstraction layer replaces the native HRESULT with a generic exception.

Conditions that specifically lead to this result

  • Cause 1 for DB_E_ALTERRESTRICTED: a foreign key depends on the column.
  • Cause 2 for DB_E_ALTERRESTRICTED: a check or unique constraint would become invalid.
  • Cause 3 for DB_E_ALTERRESTRICTED: provider rules prohibit the requested alteration while the constraint exists.

Evidence to collect

A useful DB_E_ALTERRESTRICTED event records provider CLSID and version, process architecture, interface IID and method, object correlation ID, transaction state and the immediately preceding HRESULT. When recording DB_E_ALTERRESTRICTED data involving catalog names, schema names, object identifiers and deployment definitions, use types, lengths, hashes or redacted identifiers rather than secrets or complete business data.

  • Evidence 1 for DB_E_ALTERRESTRICTED: target table and column DBIDs.
  • Evidence 2 for DB_E_ALTERRESTRICTED: blocking constraint definitions.
  • Evidence 3 for DB_E_ALTERRESTRICTED: whether transactional DDL can preserve atomicity.

Diagnostic sequence

  1. Capture raw 0x80040E9D and symbolic DB_E_ALTERRESTRICTED at the native call boundary.
  2. Identify the exact failing stage for DB_E_ALTERRESTRICTED: a table or column alteration is blocked because an existing constraint references the target.
  3. Retrieve all OLE DB error records for DB_E_ALTERRESTRICTED before another COM call replaces thread error information.
  4. Compare the live object state and provider-granted capabilities with the input that produced DB_E_ALTERRESTRICTED.
  5. Reduce the DB_E_ALTERRESTRICTED operation to the smallest case that preserves the same ddl contract.
  6. Apply one evidence-backed correction for DB_E_ALTERRESTRICTED and verify that the result is not merely replaced by a neighboring HRESULT.

Corrective actions

  • Action 1 for DB_E_ALTERRESTRICTED: alter or drop dependents in a reviewed order.
  • Action 2 for DB_E_ALTERRESTRICTED: recreate equivalent constraints after the compatible schema change.
  • Action 3 for DB_E_ALTERRESTRICTED: avoid disabling integrity without a validation plan.

Retry and recovery

Retry rule for DB_E_ALTERRESTRICTED: retry after blocking constraints have been removed or changed consistently. A DB_E_ALTERRESTRICTED retry is safe only when the relevant input, object generation, capability or external state has changed. Before replaying a modifying call that returned DB_E_ALTERRESTRICTED, determine whether rows, schema objects or URL resources were partially created or changed.

Do not turn DB_E_ALTERRESTRICTED into an unbounded retry loop. Preserve cancellation for DB_E_ALTERRESTRICTED and use a fresh provider object when the failed call may have left local state ambiguous.

Practical scenario

A migration narrows a referenced key column before updating its foreign key; coordinating both definitions prevents DB_E_ALTERRESTRICTED. Keeping DB_E_ALTERRESTRICTED with the method and object state makes this scenario diagnosable instead of reducing it to “database error”.

Difference from nearby HRESULT values

DB_E_DROPRESTRICTED blocks dropping a referenced object, while DB_E_ALTERRESTRICTED blocks changing one. Telemetry and remediation for DB_E_ALTERRESTRICTED should keep these outcomes distinct.

Developer and operations guidance

Code handling DB_E_ALTERRESTRICTED should release COM objects in ownership order, retain per-row, per-column or per-property statuses, and log granted capabilities rather than only requested options. While handling DB_E_ALTERRESTRICTED, opaque values such as HACCESSOR, HROW, HCHAPTER, DBID components and provider handles must remain scoped to the object that issued them.

Operational dashboards for DB_E_ALTERRESTRICTED should group by provider version, interface, method and normalized failure stage. A DB_E_ALTERRESTRICTED event must not expose passwords, tokens, full connection strings, unrestricted command text or raw row contents.

Official Microsoft references

Looking for a different code? Search another status or error code.