---
updatedAt: 2026-05-04T08:49:20.000Z
agentTools:
  projectIndex: https://docs.falco-app.be/llms.txt
---

# Verify whether a Peppol participant is registered to receive a certain document type

Required scope : `peppol:participants:read`


# OpenAPI definition

```json
{
  "openapi": "3.1.0",
  "info": {
    "title": "Peppol",
    "version": "1.0.0",
    "description": "`X-Falco-App-Secret` + `X-Falco-Api-Key`.\n"
  },
  "servers": [
    {
      "url": "https://api.falco-app.be/v1",
      "description": "Production"
    },
    {
      "url": "https://api.sandbox.falco-app.be/v1",
      "description": "Sandbox"
    }
  ],
  "security": [
    {
      "ApiKeyAuth": []
    }
  ],
  "components": {
    "securitySchemes": {
      "ApiKeyAuth": {
        "type": "apiKey",
        "in": "header",
        "name": "X-Falco-App-Secret",
        "description": "`X-Falco-App-Secret`: Falco Application Secret associated to your application. Use together with the `X-Falco-Api-Key` header."
      }
    },
    "schemas": {
      "Problem": {
        "type": "object",
        "properties": {
          "type": {
            "type": "string",
            "format": "uri"
          },
          "title": {
            "type": "string"
          },
          "status": {
            "type": "integer"
          },
          "code": {
            "type": "string"
          },
          "detail": {
            "type": "string"
          },
          "instance": {
            "type": "string"
          },
          "trace_id": {
            "type": "string"
          }
        }
      }
    }
  },
  "paths": {
    "/peppol/participants/check": {
      "get": {
        "summary": "Verify whether a Peppol participant is registered to receive a certain document type",
        "tags": [
          "Participants"
        ],
        "description": "Required scope : `peppol:participants:read`\n",
        "parameters": [
          {
            "name": "participant_identifier",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "The Participant identifier to check"
          },
          {
            "name": "document_type",
            "in": "query",
            "schema": {
              "type": "string",
              "enum": [
                "invoice",
                "credit_note"
              ]
            },
            "description": "The document type to check for"
          },
          {
            "name": "test_environment",
            "in": "query",
            "schema": {
              "type": "string",
              "enum": [
                true,
                false
              ]
            },
            "description": "When set to `true`, the check will be done on the Peppol test Network (SMK). In Sandbox mode, this value is `true` by default, `false` otherwise."
          },
          {
            "name": "X-Falco-Api-Key",
            "in": "header",
            "required": true,
            "description": "Falco Api Key (provided by the client - required in addition to X-Falco-App-Secret).",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Verification result",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "participant_identifier": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          },
          "404": {
            "description": "Could not find participant registration",
            "content": {
              "application/problem+json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "type": {
                      "type": "string",
                      "enum": [
                        "urn:falco-api:billing:unsupported-vat-number",
                        "urn:falco-api:billing:participant-does-not-exist",
                        "urn:falco-api:billing:access-point-not-found",
                        "urn:falco-api:billing:hermes-participant"
                      ]
                    }
                  }
                }
              }
            }
          },
          "default": {
            "description": "Error (RFC 9457)",
            "content": {
              "application/problem+json": {
                "schema": {
                  "$ref": "#/components/schemas/Problem"
                }
              }
            }
          }
        }
      }
    }
  }
}
```