ERROR_DS_SEMANTIC_ATT_TEST - 8383 (0x20BF)
Schema update failed: range-lower less than range upper.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_DS_SEMANTIC_ATT_TEST error code indicates a failure during the schema update process. Specifically, it occurs when a semantic attribute test fails due to an invalid range specification.
Error Details
This error is typically encountered in scenarios where directory service schemas are being updated or modified. The error message range-lower less than range upper suggests that there was an attempt to define a range for an attribute, but the lower bound of the range was set higher than the upper bound.
Usage Context
This error code is relevant in the context of directory service operations, particularly when dealing with schema modifications. It can be encountered during administrative tasks such as adding or modifying attributes within the Active Directory schema.
Developer Interpretation
When encountering this error, developers should understand that it indicates an issue with the range specification for a particular attribute. The lower bound of the range cannot be set higher than the upper bound. Developers must ensure that all range specifications are correctly defined before attempting to update or modify the directory service schema.
Related Errors
ERROR_DS_ATT_SCHEMA_REQVIOL(8379): Attribute schema requirement violation.ERROR_DS_DRA_SCHEMA_CONFLICT(8402): Schema conflict detected during replication.
FAQ
Q: What does the ERROR_DS_SEMANTIC_ATT_TEST error mean?
A: It indicates that a semantic attribute test failed due to an invalid range specification in the schema update process.
Q: How can I resolve this issue?
A: Ensure that all range specifications for attributes are correctly defined, with the lower bound not exceeding the upper bound. Correct any errors and retry the operation.
Summary
The ERROR_DS_SEMANTIC_ATT_TEST error code is a specific technical indicator of an invalid range specification during schema updates in directory services. Developers should carefully validate all attribute definitions to avoid this issue.