---
type: concept
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  pageDirectory: concepts
  sources:
    - delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md
  confidence: 1
  provenanceState: extracted
  freshnessStatus: unverified
  aliases:
    - delta_iceberg_writer_compat_violation
    - DELTA_ICEBERG_WRITER_COMPAT_VIOLATION
    - Delta-Iceberg Writer Compat Violation
    - error class DELTA_ICEBERG_WRITER_COMPAT_VIOLATION
    - delta_iceberg_writer_compat_violation-error-class
    - DEC
  citations:
    - file: delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md
title: DELTA_ICEBERG_WRITER_COMPAT_VIOLATION
description: A Databricks error class raised when Delta Lake write operations violate Iceberg-compatible writer constraints
tags:
  - databricks
  - error-messages
  - delta-lake
  - iceberg
timestamp: "2026-06-19T15:05:57.709Z"
---

---
title: DELTA_ICEBERG_WRITER_COMPAT_VIOLATION
summary: An error class raised when a Delta Lake write operation violates Iceberg compatibility constraints, mapped to SQLSTATE KD00E, with multiple sub-conditions detailing the specific violation.
sources:
  - delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md
kind: error
createdAt: "2026-06-20T08:07:26.254Z"
updatedAt: "2026-06-20T08:07:26.254Z"
tags:
  - databricks
  - delta-lake
  - iceberg
  - error
  - compatibility
aliases:
  - delta_iceberg_writer_compat_violation
  - DIWCV
confidence: 1
provenanceState: extracted
inferredParagraphs: 0
---

# DELTA_ICEBERG_WRITER_COMPAT_VIOLATION

The `DELTA_ICEBERG_WRITER_COMPAT_VIOLATION` error is raised when a [Delta Lake](/concepts/delta-lake.md) write operation fails validation against an IcebergWriterCompatV`<version>` constraint. Its SQLSTATE is `KD00E` (data source specific). The error message includes a sub‑condition that identifies the exact violation. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]

## Common Sub‑Conditions

The error class contains nine distinct sub‑errors, each describing a different compatibility problem:

- **CANNOT_CHANGE_MAP_STRUCT_KEY** – The transaction attempts to change map keys that are structs, which is disallowed by the IcebergWriterCompat version. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **CONFIG_NOT_ENABLED** – The required configuration key is not enabled. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **DISABLING_REQUIRED_TABLE_FEATURE** – The writer version requires a table feature to be supported and enabled; the operation attempts to drop that feature. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **FIELD_ID_DOES_NOT_MATCH_PHYSICAL_NAME** – Column mapping field physical names must follow the pattern `col-[fieldId]`, but one or more fields violate this rule. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **INCOMPATIBLE_TABLE_FEATURE** – The IcebergWriterCompat version is incompatible with an existing table feature. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **MISSING_REQUIRED_TABLE_FEATURE** – A required table feature is not supported or enabled. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **UNSUPPORTED_DATA_TYPE** – The schema contains a data type that is not supported by the IcebergWriterCompat version. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **UNSUPPORTED_ICEBERG_TABLE_PROPERTY** – An Apache Iceberg table property is set that is not supported by the writer version. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]
- **WRONG_REQUIRED_TABLE_PROPERTY** – A required table property is set to an incorrect value; the error includes the expected value and the actual value. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]

## Context

This error is part of Databricks’ Iceberg compatibility layer, which enforces that Delta tables written with IcebergWriterCompatV`<version>` produce output that can be read by Apache Iceberg readers. The version number (e.g., V1, V2) determines the set of allowed table features, data types, column mapping rules, and table properties. ^[delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md]

## Related Concepts

- [Delta Lake](/concepts/delta-lake.md) – The underlying table format.
- [Apache Iceberg](/concepts/uniform-apache-iceberg-format.md) – The target table format for compatibility.
- [IcebergWriterCompat](/concepts/icebergwritercompatv.md) – The writer compatibility mode that triggers this error.
- [Delta Lake table features](/concepts/delta-lake-reader-table-features.md) – Features that can be enabled or disabled on a table.
- [Column mapping in Delta Lake](/concepts/column-mapping-in-delta-lake.md) – The mapping between column logical names and physical names.
- [SQLSTATE KD00E](/concepts/sqlstate-kd00e.md) – The data source specific SQL state for this error.

## Sources

- delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md

# Citations

1. [delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws.md](/references/delta_iceberg_writer_compat_violation-error-condition-databricks-on-aws-02e8eab9.md)
