Error
Error Code:
598
SAP S/4HANA Error 598: External API Execution Failure
Description
This error indicates that an attempt by SAP S/4HANA to execute a statement or operation on an external system or API has failed. It typically occurs when SAP S/4HANA tries to integrate with an external service, application, or database, and that external interaction does not complete successfully.
Error Message
ERR_API_EXTERNAL_EXECUTION_FAILURE
Known Causes
4 known causesExternal System Unavailability
The external system or service that SAP S/4HANA is trying to communicate with is offline, unresponsive, or experiencing downtime.
Network Connectivity Issues
Problems with network infrastructure prevent SAP S/4HANA from establishing or maintaining a stable connection to the external system.
Incorrect External System Configuration
The configuration settings for the external system within SAP S/4HANA, or the parameters passed to the external statement, are incorrect or malformed.
Authentication/Authorization Failure
SAP S/4HANA lacks the necessary credentials or permissions to access or execute statements on the external system.
Solutions
3 solutions available1. Verify External API Service Availability and Connectivity easy
Ensures the target external API service is running and accessible from the S/4HANA system.
1
Identify the external API endpoint and protocol (e.g., HTTP, HTTPS, SOAP, REST) that S/4HANA is trying to connect to. This information is usually found in the S/4HANA configuration related to the integration scenario.
2
From the S/4HANA application server (or the server hosting the SAP Gateway if applicable), attempt to connect to the external API endpoint using a command-line tool or a web browser.
curl -v <external_api_url>3
Check for network connectivity issues. Ensure that firewalls between the S/4HANA system and the external API are not blocking the required ports and protocols. Consult with your network administrators.
4
If the external API is hosted internally, verify that the API service itself is running and responsive. Check its logs for any errors.
2. Review S/4HANA Integration Configuration and Credentials medium
Validates the settings within S/4HANA that define the connection to the external API, including authentication.
1
Navigate to the relevant S/4HANA transaction code for managing external integrations or RFC destinations (e.g., SM59 for RFC/HTTP destinations, SOAMANAGER for SOAP services, or specific Fiori apps for API management).
2
Locate the specific destination or configuration entry corresponding to the failing external API. Examine the connection details, including the target host, port, and URL path.
3
Verify the authentication method configured (e.g., Basic Authentication, OAuth, API Key). Ensure that the provided username, password, client ID, client secret, or API key are correct and have not expired or been revoked.
4
If using RFC destinations, perform a 'Connection Test' and 'Unicode Test' within SM59 to diagnose connectivity and character set issues.
5
For OData or REST APIs configured via SAP Gateway, check the service registration status and the configuration of the backend system alias.
3. Analyze S/4HANA System Logs and Traces advanced
Dives deep into SAP's internal logging to pinpoint the exact cause of the external API execution failure.
1
Access the S/4HANA system logs using transaction ST22 (ABAP Dumps) to check for any ABAP short dumps that occurred around the time of the error. Look for dumps related to communication errors or external calls.
2
Use transaction SM21 (System Log) to review system-wide messages. Filter by the relevant time frame and search for error messages related to communication, network, or the specific integration scenario.
3
Enable and analyze SAP Gateway traces (transaction LGTR) if the external API is accessed via OData or other Gateway services. This can provide detailed information about the request and response flow.
4
If the external API call is part of an ABAP program, consider enabling debugging for the relevant ABAP code. Set breakpoints before the API call to inspect variables and understand the context.
5
For SOAP calls, use transaction SOAMANAGER to check the WSDL, service endpoint, and any related configuration. Analyze the SOAP Fault messages if available.