Azure Embeddings node Failure

[TechnoTalks]

Describe the problem/error/question

Hey trying to implement basic embedding with Azure. I’m using the RAG template provided by n8n and just replaced the OpenAI embeddings node with the Azure embeddings node. I’m still using the same model deployed to Azure: text-embedding-ada-002.

What is the error message (if any)?

{
  "errorMessage": "400 Unsupported data type\n",
  "errorDescription": "400 Unsupported data type\n",
  "errorDetails": {},
  "n8nDetails": {
    "time": "7/25/2025, 8:04:42 PM",
    "n8nVersion": "1.103.2 (Self Hosted)",
    "binaryDataMode": "default"
  }
}

Please share your workflow

Share the output returned by the last node

The Default Data Loader node is properly chunking up the data to send. Here is the response from a sample PDF:

{
  "response": [
    {
      "pageContent": "Test PDF \nLorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the \nindustry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type \nand scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap \ninto electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the \nrelease of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing \nsoftware like Aldus PageMaker including versions of Lorem Ipsum. \nLorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the \nindustry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type \nand scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap",
      "metadata": {
        "source": "blob",
        "blobType": "application/pdf",
        "pdf": {
          "version": "1.10.100",
          "info": {
            "PDFFormatVersion": "1.5",
            "IsAcroFormPresent": false,
            "IsXFAPresent": false,
            "Author": "Sis1",
            "Creator": "Microsoft® Office Word 2007",
            "Producer": "Microsoft® Office Word 2007",
            "CreationDate": "D:20110121113551",
            "ModDate": "D:20110121113551"
          },
          "metadata": null,
          "totalPages": 1
        },
        "loc": {
          "lines": {
            "from": 1,
            "to": 10
          }
        }
      }
    },
    {
      "pageContent": "and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap \ninto electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the \nrelease of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing \nsoftware like Aldus PageMaker including versions of Lorem Ipsum. \nLorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the \nindustry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type \nand scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap \ninto electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the \nrelease of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing \nsoftware like Aldus PageMaker including versions of Lorem Ipsum.",
      "metadata": {
        "source": "blob",
        "blobType": "application/pdf",
        "pdf": {
          "version": "1.10.100",
          "info": {
            "PDFFormatVersion": "1.5",
            "IsAcroFormPresent": false,
            "IsXFAPresent": false,
            "Author": "Sis1",
            "Creator": "Microsoft® Office Word 2007",
            "Producer": "Microsoft® Office Word 2007",
            "CreationDate": "D:20110121113551",
            "ModDate": "D:20110121113551"
          },
          "metadata": null,
          "totalPages": 1
        },
        "loc": {
          "lines": {
            "from": 4,
            "to": 13
          }
        }
      }
    },
    {
      "pageContent": "release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing \nsoftware like Aldus PageMaker including versions of Lorem Ipsum. \nLorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the \nindustry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type \nand scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap \ninto electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the \nrelease of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing \nsoftware like Aldus PageMaker including versions of Lorem Ipsum.",
      "metadata": {
        "source": "blob",
        "blobType": "application/pdf",
        "pdf": {
          "version": "1.10.100",
          "info": {
            "PDFFormatVersion": "1.5",
            "IsAcroFormPresent": false,
            "IsXFAPresent": false,
            "Author": "Sis1",
            "Creator": "Microsoft® Office Word 2007",
            "Producer": "Microsoft® Office Word 2007",
            "CreationDate": "D:20110121113551",
            "ModDate": "D:20110121113551"
          },
          "metadata": null,
          "totalPages": 1
        },
        "loc": {
          "lines": {
            "from": 6,
            "to": 13
          }
        }
      }
    }
  ]
}

Information on your n8n setup

• n8n version: 1.103.2 (Self Hosted)
• Database (default: SQLite): SQLite
• n8n EXECUTIONS_PROCESS setting (default: own, main): default
• Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
• Operating system: Ubuntu 24.04.1 LTS x86_64 with Coolify