Error
Error Code:
5542
SAP S/4HANA Error 5542: Text Preprocessor Communication Failure
Description
This error indicates a critical communication breakdown between the SAP S/4HANA system and its text preprocessor component. It typically occurs when the system attempts to process or analyze text data, but the necessary communication channel to the preprocessor is disrupted or misconfigured, impacting features relying on text analysis or enrichment.
Error Message
ERR_TEXT_PREPROCESSOR_COMMUNICATION_ERROR
Known Causes
4 known causesNetwork Connectivity Problems
The SAP S/4HANA system or the text preprocessor service might be experiencing temporary network disruptions, firewall blocks, or incorrect routing preventing communication.
Preprocessor Service Unavailability
The text preprocessor service itself might be stopped, crashed, or incorrectly configured, leading to an inability to accept or process requests from SAP S/4HANA.
Resource Constraints
The server hosting the preprocessor might be under heavy load or have insufficient memory/CPU, preventing it from responding to communication requests in a timely manner.
Configuration Mismatch
Incorrectly configured connection parameters, URLs, or authentication settings between SAP S/4HANA and the text preprocessor service can cause communication failures.
Solutions
3 solutions available1. Verify Text Preprocessor Service Status easy
Ensure the Text Preprocessor service is running and accessible.
1
Log in to your SAP S/4HANA system's SAP GUI.
2
Execute transaction code SM51 to view the available application servers.
3
On the 'Servers' tab, identify the server where the Text Preprocessor service is expected to run. Look for work processes of type 'Dialog' or 'Background' that might be associated with text processing tasks.
4
Navigate to SMGW (Gateway Monitor) and check the status of registered programs. Look for the Text Preprocessor service, often identified by a specific program name (e.g., 'TPREPROCESSOR' or similar, though this can vary by SAP version and configuration).
5
If the service is not registered or shows an error, restart the Text Preprocessor service. This typically involves restarting the relevant application server instance or, if it's a separate service, using operating system commands to restart it.
6
Alternatively, you can try to restart the entire SAP S/4HANA instance, which will also restart all associated services, including the Text Preprocessor.
2. Check Network Connectivity and Firewall Rules medium
Ensure the SAP application server can communicate with the Text Preprocessor service over the network.
1
Identify the hostname and port number used by the Text Preprocessor service. This information is usually found in the SAP system's configuration files (e.g., `saproutab`, `gw/reg_info`) or within the SMGW transaction under 'Goto' -> 'Expert Functions' -> 'Connection Info'.
2
From the SAP application server where the error is occurring, attempt to establish a network connection to the Text Preprocessor service's host and port. You can use tools like `telnet` or `nc` (netcat) from the operating system command line.
telnet <text_preprocessor_host> <port_number>3
If the connection fails, investigate firewall rules between the SAP application server and the Text Preprocessor service. Ensure that the necessary ports are open and that no network devices are blocking the communication.
4
If using SAP Gateway (SMGW) for communication, ensure the gateway configuration (`gw/acl_mode`, `gw/reg_info`, `saproutab`) is correctly set up to allow the Text Preprocessor to register and for the application server to connect to it.
5
Verify DNS resolution for both the SAP application server and the Text Preprocessor service. Incorrect DNS entries can lead to communication failures.
3. Review Text Preprocessor Configuration and Resources advanced
Examine the Text Preprocessor's configuration parameters and system resource utilization.
1
Access the Text Preprocessor service's configuration parameters. This might be done through SAP transaction codes related to text processing or by examining configuration files on the server where the service runs.
2
Check for any parameters that might limit the number of concurrent connections or processing threads, and ensure they are set appropriately for your system load.
3
Monitor the system resources (CPU, memory, disk I/O) on the server hosting the Text Preprocessor service. High resource utilization can lead to communication timeouts and failures.
4
Examine the log files of the Text Preprocessor service for specific error messages or warnings that can provide more detailed insights into the cause of the communication failure.
5
If the Text Preprocessor is a separate component, ensure it has been updated to a compatible version with your SAP S/4HANA release.