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DORA errors : RoI Register Error Message Guidance

Last Updated on May 22, 2025 by Arnaud Collignon

Important: Error messages lead to register rejection, while warnings do not, but both must be addressed for successful submission.

📑 Common ESA Error and Warning Messages

🔐 Rule Code 103 – Invalid ZIP File

Type: ❌ Error
ZIP file structure issues, such as mismatched folder names or missing extensions.

Fix: Ensure the ZIP file:

  • Has a root folder matching the ZIP name (uppercase, no .zip)
  • Contains reports and META-INF subfolders (case-sensitive)

🧮 Rule Code 305 – Numeric Field with String Value

Type: ⚠️ Warning
Numeric field contains text or is empty.

Fix: Provide numeric values in fields like b_05.01.0100 when applicable.

🗃 Rule Code 306 – File Not in UTF-8 Encoding

Type: ❌ Error
Files must be encoded in UTF-8. (no BOM)

📅 Rule Code 330 – Date Format Invalid

Type: ⚠️ Warning
Dates must follow yyyy-mm-dd format.

🔢 Rule Code 331 – Integer Format Required

Type: ⚠️ Warning
Integer fields must not contain decimals or strings.

📋 Rule Code 503 – Invalid Dropdown Value

Type: ⚠️ Warning
Dropdown values not selected from ESA-approved lists.

🔗 Dropdown List (March 2025)

📂 Filing Indicators (702–704, 808)

Errors in FilingIndicators.csv:

  • 702: Wrong header columns
  • 703: Duplicate entries
  • 704/808: Invalid Boolean values; must be true only

Fix: Ensure correct UTF-8 encoding, format, and Boolean usage.

🆔 Rule Code 714 – Invalid entityID

parameters.csv must contain correct entityID and reference period.

🗂 Rule Code 720 – Extra or Misspelled Files

Only specified .csv files are allowed. No .xlsx files.

📄 Rule Code 723 – Incorrect Header in parameters.csv

First row must be exactly name,value

📑 Rule Code 801 – Invalid Headers

Headers in .csv must:

  • Use cXXXX format (e.g., c0010)
  • Be in lowercase
  • Match the DPM structure

🔗 DORA RoI Data Model

🔑 Rule Code 805 – Missing Key Fields

Key fields (primary/foreign) must never be empty.

📛 Rule Code 806 – Duplicate Keys in Open Tables

Each key must be unique within open tables.

🧷 Rule Code 807 – Key-Foreign Key Violations

Foreign key values must exist in source tables.

🧾 Rule Code 809 – CSV Format Issues

Includes:

  • Wrong UTF-8 encoding
  • Mismatched columns in rows

⚠️ Rules v88xx_m / v8888x_m – Conditional Required Fields

Warnings for missing values required under certain conditions.

🌐 LEI/EUID Validation – VR Codes

  • VR_2, VR_12, VR_23, VR_71, VR_77: Invalid LEI
  • VR_72, VR_78: Invalid EUID

Fix: Verify identifiers using:

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