Flowker error list

The format is as follows:

{
   "code":"<error_code>",
   "title":"<error_title>",
   "message":"<error_message>"
}

Field definitions

code: A unique, stable identifier for the error (format: FLK-XXXX).
title: A brief summary of the issue.
message: Detailed guidance for resolving the error.

Field-level error details For issues specific to individual fields, a fields object provides additional context. Examples:

{
   "code":"FLK-0110",
   "title":"Missing Required Field",
   "message":"The name field is required. Please provide a name for the workflow and try again.",
   "fields": {
      "name": "name is a required field"
   }
}

General errors

These errors apply to all Flowker API endpoints.

`code`	`title`	`message`
FLK-0001	Invalid Request Body	The request body is invalid or malformed. Please verify the JSON format and try again.
FLK-0002	Invalid ID	The provided ID is not a valid UUID format. Please verify the ID and try again.
FLK-9999	Internal Server Error	An unexpected error occurred. Please try again later or contact support if the issue persists.

Request validation errors

These errors are returned when the API request does not meet validation requirements.

`code`	`title`	`message`
FLK-0300	Unexpected Fields in Request	The request contains unexpected fields. Please remove the extra fields and try again.
FLK-0301	Missing Fields in Request	One or more required fields are missing. Please provide all required fields and try again.
FLK-0302	Bad Request	The request is invalid. Please verify the request format and try again.
FLK-0303	Calculation Field Type Error	A field used in a calculation has an invalid type. Please verify the field types and try again.
FLK-0304	Invalid Query Parameter	One or more query parameters are invalid. Please verify the parameters and try again.
FLK-0305	Invalid Date Format	The date must be in RFC3339 format with timezone (e.g., 2026-01-28T10:30:00Z). Date-only format is not accepted.
FLK-0306	Invalid Final Date	The end date must be after the start date. Please provide a valid date range.
FLK-0307	Date Range Exceeds Limit	The requested date range exceeds the maximum allowed period. Please reduce the date range.
FLK-0308	Invalid Date Range	The date range is invalid. Please verify the start and end dates.
FLK-0309	Pagination Limit Exceeded	The limit parameter exceeds the maximum allowed value. Please reduce the limit and try again.
FLK-0310	Invalid Sort Order	Sort order must be ASC or DESC. Please provide a valid value.
FLK-0311	Invalid Path Parameter	The provided path parameter is invalid. Please verify the parameter value and try again.
FLK-0312	Metadata Key Too Long	The metadata key exceeds the maximum allowed length of 64 characters. Please reduce the key size.
FLK-0313	Metadata Value Too Long	The metadata value exceeds the maximum allowed length. Please reduce the value size.
FLK-0314	Invalid Metadata Nesting	Metadata values cannot be nested objects. Please provide flat key-value pairs.
FLK-0315	Metadata Entries Exceeded	The metadata exceeds the maximum number of entries. Please reduce the number of metadata entries.

Entity errors

`code`	`title`	`message`
FLK-0400	Entity Not Found	The requested entity does not exist. Please verify the ID and try again.
FLK-0401	Action Not Permitted	This action is not permitted in the current state. Please check the resource status and try again.
FLK-0402	Parent Entity Not Found	The referenced parent entity does not exist. Please verify the parent ID and try again.

Workflow errors

`code`	`title`	`message`
FLK-0100	Workflow Not Found	The requested workflow does not exist. Please verify the workflow ID and try again.
FLK-0101	Workflow Name Conflict	A workflow with this name already exists. Please choose a different name and try again.
FLK-0102	Invalid Status Transition	The requested status transition is not allowed. Please check the current workflow status and valid transitions.
FLK-0103	Workflow Cannot Be Modified	Non-draft workflows cannot be modified. Please create a new version or revert to draft if supported.
FLK-0104	Referenced Executor Not Found	A node references an executor configuration that does not exist. Please verify the executor configuration ID.
FLK-0105	Invalid Conditional Expression	The conditional expression is invalid or could not be evaluated. Please verify the expression syntax.
FLK-0110	Workflow Name Required	The name field is required. Please provide a name for the workflow and try again.
FLK-0111	Workflow Name Too Long	The workflow name exceeds the maximum allowed length. Please reduce the name size.
FLK-0112	Workflow Nodes Required	A workflow must have at least one node. Please add nodes to the workflow and try again.
FLK-0113	Too Many Nodes	The workflow exceeds the maximum number of nodes allowed. Please reduce the node count.
FLK-0114	Too Many Edges	The workflow exceeds the maximum number of edges allowed. Please reduce the edge count.
FLK-0115	Invalid Edge Reference	An edge references a node that does not exist in the workflow. Please verify all edge source and target values.
FLK-0116	Missing Trigger Node	The workflow must have at least one trigger node. Please add a trigger and try again.
FLK-0120	Node ID Required	Each node must have an ID. Please provide an ID for all nodes.
FLK-0121	Node Type Required	Each node must have a type. Please provide a type for all nodes.
FLK-0130	Edge ID Required	Each edge must have an ID. Please provide an ID for all edges.
FLK-0131	Edge Source Required	Each edge must specify a source node. Please provide the source node ID.
FLK-0132	Edge Target Required	Each edge must specify a target node. Please provide the target node ID.
FLK-0140	Invalid Input Mapping	The input mapping configuration is invalid. Please verify the mapping syntax and field references.
FLK-0141	Invalid Output Mapping	The output mapping configuration is invalid. Please verify the mapping syntax and field references.
FLK-0142	Invalid Transforms	The transformation configuration is invalid. Please verify the transform expressions.
FLK-0150	Invalid Provider Configuration	The provider configuration specified in the node is invalid. Please verify the configuration format.
FLK-0151	Provider Configuration Mismatch	The provider configuration does not match the expected schema for this provider. Please verify the configuration fields.

Catalog, executor, and trigger errors

`code`	`title`	`message`
FLK-0200	Executor Not Found	The requested executor does not exist in the catalog. Please verify the executor ID and try again.
FLK-0201	Invalid Executor Configuration	The executor configuration is invalid. Please verify the configuration format.
FLK-0210	Trigger Not Found	The requested trigger does not exist in the catalog. Please verify the trigger ID and try again.
FLK-0211	Invalid Trigger Configuration	The trigger configuration is invalid. Please verify the configuration format.
FLK-0220	Runner Not Found	The requested runner does not exist. Please verify the runner ID and try again.
FLK-0230	Provider Not Found	The requested provider does not exist in the catalog. Please verify the provider ID and try again.
FLK-0231	Provider Duplicate	A provider with this identifier already exists. Please use the existing provider or choose a different ID.
FLK-0232	Invalid Provider Configuration	The provider configuration is invalid. Please verify the configuration format.
FLK-0233	Provider Executor Not Configured	The provider executor is not configured. Please configure the executor before proceeding.

Executor configuration errors

`code`	`title`	`message`
FLK-0250	Executor Configuration Not Found	The requested executor configuration does not exist. Please verify the ID and try again.
FLK-0251	Executor Configuration Name Conflict	An executor configuration with this name already exists. Please choose a different name and try again.
FLK-0252	Executor Configuration Cannot Be Modified	The executor configuration cannot be modified in its current status. Please check the status and try again.
FLK-0260	Executor Configuration Name Required	The name field is required. Please provide a name for the executor configuration.
FLK-0261	Executor Configuration Name Too Long	The executor configuration name exceeds the maximum allowed length. Please reduce the name size.
FLK-0262	Base URL Required	The baseUrl field is required. Please provide a base URL for the executor configuration.
FLK-0263	Invalid Base URL	The provided base URL is not a valid URL. Please verify the URL format.
FLK-0264	Base URL Too Long	The base URL exceeds the maximum allowed length. Please reduce the URL size.
FLK-0265	Endpoints Required	At least one endpoint must be configured. Please provide endpoint definitions.
FLK-0266	Auth Configuration Required	Authentication configuration is required. Please provide auth settings.
FLK-0267	Description Too Long	The description exceeds the maximum allowed length. Please reduce the description size.
FLK-0268	Auth Type Required	The auth type field is required. Please provide an authentication type.
FLK-0269	Invalid Auth Type	The auth type is not recognized. Please provide a valid authentication type.
FLK-0270	Endpoint Name Required	Each endpoint must have a name. Please provide names for all endpoints.
FLK-0271	Endpoint Path Required	Each endpoint must have a path. Please provide paths for all endpoints.
FLK-0272	Endpoint Method Required	Each endpoint must specify an HTTP method. Please provide methods for all endpoints.
FLK-0273	Invalid Endpoint Method	The HTTP method is not valid. Please use one of GET, POST, PUT, PATCH, or DELETE.
FLK-0280	Connectivity Test Failed	The connectivity test to the external service failed. Please verify the base URL and credentials.
FLK-0281	Endpoint Unreachable	The configured endpoint could not be reached. Please verify the URL and network connectivity.
FLK-0282	Auth Test Failed	Authentication with the external service failed. Please verify the credentials and auth configuration.
FLK-0283	Transform Test Failed	The data transformation test failed. Please verify the transformation expressions.

Provider configuration errors

`code`	`title`	`message`
FLK-0290	Provider Configuration Not Found	The requested provider configuration does not exist. Please verify the ID and try again.
FLK-0291	Provider Configuration Name Conflict	A provider configuration with this name already exists. Please choose a different name and try again.
FLK-0292	Provider Configuration Cannot Be Modified	The provider configuration cannot be modified in its current status. Please check the status and try again.
FLK-0293	Invalid Provider Configuration Schema	The provider configuration does not match the provider’s required schema. Please verify the configuration fields.
FLK-0294	Provider Not Found in Catalog	The referenced provider does not exist in the catalog. Please verify the provider ID.
FLK-0295	Provider Configuration Name Required	The name field is required. Please provide a name for the provider configuration.
FLK-0296	Provider Configuration Name Too Long	The provider configuration name exceeds the maximum allowed length. Please reduce the name size.
FLK-0297	Provider ID Required	The providerId field is required. Please provide a provider ID.
FLK-0298	Configuration Object Required	The config field is required. Please provide the provider configuration object.
FLK-0299	Description Too Long	The description exceeds the maximum allowed length. Please reduce the description size.
FLK-0340	Missing Base URL	The provider configuration is missing the required base_url field. Please add the base URL to the configuration.

Workflow execution errors

`code`	`title`	`message`
FLK-0500	Execution Not Found	The requested execution does not exist. Please verify the execution ID and try again.
FLK-0501	Workflow Not Active	The workflow is not in an active state and cannot be executed. Please activate the workflow and try again.
FLK-0502	Execution In Progress	A previous execution for this workflow is still in progress. Please wait for it to complete.
FLK-0503	Execution Timeout	The workflow execution timed out before completing. Please check the workflow logic and external service response times.
FLK-0504	Execution Node Failed	A node within the workflow failed during execution. Please check the execution details for the specific node error.
FLK-0505	Duplicate Execution	An execution with this idempotency key already exists. Please use a new key for distinct executions.
FLK-0506	Input Payload Too Large	The request body must not exceed 1 MB. Please reduce the input payload size.
FLK-0507	Circuit Breaker Open	The circuit breaker for this executor is open due to repeated failures. Please wait before retrying.
FLK-0508	Execution Cycle Detected	A cycle was detected in the workflow graph. Please review the edges and remove circular references.
FLK-0509	Missing Idempotency Key	The Idempotency-Key header is required for execution requests. Please include a unique key in the header.

Fault injection errors (test environments only)

These errors are only returned in environments with fault injection enabled. They are not present in production.

`code`	`title`	`message`
FLK-0800	Gateway Timeout	Simulated gateway timeout for testing purposes.
FLK-0801	Service Unavailable	Simulated service unavailability for testing purposes.

Overview

Sandbox and licensing

Integration essentials

Stability & quality

Flowker error list

General errors

Request validation errors

Entity errors

Workflow errors

Catalog, executor, and trigger errors

Executor configuration errors

Provider configuration errors

Workflow execution errors

Fault injection errors (test environments only)

Overview

Sandbox and licensing

Integration essentials

Stability & quality

​General errors

​Request validation errors

​Entity errors

​Workflow errors

​Catalog, executor, and trigger errors

​Executor configuration errors

​Provider configuration errors

​Workflow execution errors

​Fault injection errors (test environments only)

General errors

Request validation errors

Entity errors

Workflow errors

Catalog, executor, and trigger errors

Executor configuration errors

Provider configuration errors

Workflow execution errors

Fault injection errors (test environments only)