How to fix Error 2232 on Windows Server 2025 / Windows 11

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Troubleshooting Guide: Error 2232 – “The name ‘%ls:%ls’ does not denote a defined type”

Why This Error Happens

This error occurs when SQL Server’s parser encounters a schema-qualified type reference (such as schema.typename) that does not exist in the system catalog, typically due to a misspelled type name, an incorrect schema prefix, or a user-defined type (UDT) that was never created or was dropped. It can also surface when a CLR-based user-defined type assembly failed to register properly, leaving metadata references orphaned. Additionally, this issue frequently arises after a database migration or restore where type dependencies were not scripted or deployed in the correct order.

Step-by-Step Resolution Guide

Step 1: Verify the Type Exists in the Target Schema

  • Run the following query to confirm the type is registered:
  SELECT name, schema_id, is_user_defined 
  FROM sys.types 
  WHERE name = 'YourTypeName';
  • Check that the schema prefix used in your script matches the schema_id returned (cross-reference with sys.schemas).
  • If no rows are returned, the type does not exist and must be created or restored.

Step 2: Recreate or Re-register the Missing Type

  • If it’s a user-defined data type (alias type), recreate it using:
  CREATE TYPE schema_name.TypeName FROM base_type NULL/NOT NULL;
  • If it’s a CLR user-defined type, confirm the assembly is loaded:
  SELECT * FROM sys.assemblies WHERE name = 'YourAssemblyName';
  • If missing, re-deploy the assembly using CREATE ASSEMBLY followed by CREATE TYPE ... EXTERNAL NAME.

Step 3: Correct Schema Qualification in the Calling Script

  • Open the stored procedure, function, or script throwing the error.
  • Ensure the type reference uses the correct two-part naming convention (e.g., dbo.MyType instead of just MyType).
  • Update any hardcoded schema references that may have changed during a database rename or migration.

Step 4: Check for Dependency Order During Deployment

  • If this error appeared after a database restore or deployment pipeline run, confirm that CREATE TYPE statements execute before any procedures or table definitions that reference them.
  • Review your deployment script (DACPAC/SSDT project or .sql change scripts) and reorder dependencies if needed.

Step 5: Restart SQL Server Services (Windows Server 2025 / Windows 11)

  • Open Services.msc and restart the SQL Server (MSSQLSERVER) service to clear any cached execution plans referencing the invalid type.
  • Alternatively, run:
  DBCC FREEPROCCACHE;

to clear cached plans without a full service restart.

Alternative or Verification Steps

  • Re-run the original query or stored procedure that triggered Error 2232 and confirm it executes without exception.
  • If the error persists, use sp_depends or query sys.sql_expression_dependencies to identify all broken references to the type across the database and correct them systematically.