diff --git a/file-formats/ddlx/README.md b/file-formats/ddlx/README.md
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+++ b/file-formats/ddlx/README.md
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+# DDLX File Format
+
+
+File | Cardinality | Definition | Schema | Example
+:--- | :---  | :--- | :--- | :---
+`<name>.ddlx.json` | 1 | [`zif_aff_ddlx_v1.intf.abap`](./type/zif_aff_ddlx_v1.intf.abap) | [`ddlx-v1.json`](./ddlx-v1.json) | [`z_aff_example_ddlx.ddlx.json`](./examples/z_aff_example_ddlx.ddlx.json)
+`<name>.ddlx.acds` | 1 | [CDS](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abencds.htm) | | [`z_aff_example_ddlx.ddlx.acds`](./examples/z_aff_example_ddlx.ddlx.acds)
diff --git a/file-formats/ddlx/ddlx-v1.json b/file-formats/ddlx/ddlx-v1.json
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index 000000000..e9eb7872d
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+++ b/file-formats/ddlx/ddlx-v1.json
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+{
+  "$comment": "This file is autogenerated, do not edit manually, see https://github.com/SAP/abap-file-formats for more information.",
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://github.com/SAP/abap-file-formats/blob/main/file-formats/ddlx/ddlx-v1.json",
+  "title": "Object Type DDLX",
+  "description": "DDLX object type",
+  "type": "object",
+  "properties": {
+    "formatVersion": {
+      "title": "ABAP File Format Version",
+      "description": "The ABAP file format version",
+      "type": "string",
+      "const": "1"
+    },
+    "header": {
+      "title": "Header",
+      "description": "Header",
+      "type": "object",
+      "properties": {
+        "description": {
+          "title": "Description",
+          "description": "Description of the ABAP object",
+          "type": "string",
+          "maxLength": 60
+        },
+        "originalLanguage": {
+          "title": "Original Language",
+          "description": "Original language of the ABAP object",
+          "type": "string",
+          "minLength": 2,
+          "maxLength": 2,
+          "pattern": "^[a-z]+$"
+        },
+        "abapLanguageVersion": {
+          "title": "ABAP Language Version",
+          "description": "ABAP language version",
+          "type": "string",
+          "enum": [
+            "standard",
+            "keyUser",
+            "cloudDevelopment"
+          ],
+          "enumTitles": [
+            "Standard",
+            "ABAP for Key Users",
+            "ABAP Cloud Development"
+          ],
+          "enumDescriptions": [
+            "Standard",
+            "ABAP for key user extensibility",
+            "ABAP cloud development"
+          ],
+          "default": "standard"
+        }
+      },
+      "additionalProperties": false,
+      "required": [
+        "description",
+        "originalLanguage"
+      ]
+    }
+  },
+  "additionalProperties": false,
+  "required": [
+    "formatVersion",
+    "header"
+  ]
+}
diff --git a/file-formats/ddlx/examples/z_aff_example_ddlx.ddlx.acds b/file-formats/ddlx/examples/z_aff_example_ddlx.ddlx.acds
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+++ b/file-formats/ddlx/examples/z_aff_example_ddlx.ddlx.acds
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+@Metadata.layer: #CORE
+annotate entity Z_AFF_EXAMPLE_DDLX with {
+  @EndUserText.label: 'Carrier ID'
+  Carrid;
+}
diff --git a/file-formats/ddlx/examples/z_aff_example_ddlx.ddlx.json b/file-formats/ddlx/examples/z_aff_example_ddlx.ddlx.json
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index 000000000..f5e12ea8f
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+++ b/file-formats/ddlx/examples/z_aff_example_ddlx.ddlx.json
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+{
+  "formatVersion": "1",
+  "header": {
+    "description": "Example DDLX for AFF",
+    "originalLanguage": "en"
+  }
+}
diff --git a/file-formats/ddlx/type/zif_aff_ddlx_v1.intf.abap b/file-formats/ddlx/type/zif_aff_ddlx_v1.intf.abap
new file mode 100644
index 000000000..fd05fda11
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+++ b/file-formats/ddlx/type/zif_aff_ddlx_v1.intf.abap
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+INTERFACE zif_aff_ddlx_v1
+  PUBLIC.
+
+  TYPES:
+    "! <p class="shorttext">Object Type DDLX</p>
+    "! DDLX object type
+    BEGIN OF ty_main,
+      "! $required
+      format_version TYPE zif_aff_types_v1=>ty_format_version,
+      "! <p class="shorttext">Header</p>
+      "! Header
+      "! $required
+      header         TYPE zif_aff_types_v1=>ty_header_60,
+    END OF ty_main.
+
+ENDINTERFACE.
diff --git a/file-formats/ddlx/type/zif_aff_ddlx_v1.intf.json b/file-formats/ddlx/type/zif_aff_ddlx_v1.intf.json
new file mode 100644
index 000000000..557f5f872
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+++ b/file-formats/ddlx/type/zif_aff_ddlx_v1.intf.json
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+{
+  "formatVersion": "1",
+  "header": {
+    "description": "Aff type for DDLX objects",
+    "originalLanguage": "en"
+  }
+}