How To Fix UCUW154 - No call parameters available

SAP Error Message - Details

• Message type: E = Error

• Message class: UCUW -

• Message number: 154

• Message text: No call parameters available

What causes this issue?

While starting the application in a new window, parameters were saved in
the system for the new window. These parameters no longer exist.

System Response

The start of the application in the new window will be terminated.

How to fix this error?

This error can occur when you use the browser functions Refresh or Back.
You should not use the navigation functions of the browser when running
Web Dynpro applications.
This error can also occur when system capacity is overloaded and the
memory area reserved for shared objects becomes too small. If this is
the case, end and restart the application. If the error caused by a
small memory area persists, report this problem to your system
administrator.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCUW154 - No call parameters available ?

  The SAP error message UCUW154: No call parameters available typically occurs in the context of SAP's Workflow or Business Process Management (BPM) when a workflow is triggered but there are no parameters available for the workflow to execute properly. This can happen for various reasons, including configuration issues, missing data, or incorrect workflow definitions.
  Causes:
  
  Missing Workflow Parameters: The workflow might be expecting certain parameters to be passed to it, but they are not available or not defined.
  Incorrect Workflow Configuration: The workflow might not be configured correctly, leading to a situation where it cannot retrieve the necessary parameters.
  Data Issues: The data that is supposed to trigger the workflow might be incomplete or incorrect, leading to a lack of parameters.
  Authorization Issues: Sometimes, the user triggering the workflow may not have the necessary authorizations to access the required parameters.
  
  Solutions:
  
  Check Workflow Definition: Review the workflow definition to ensure that all necessary parameters are defined and correctly configured.
  Verify Data Input: Ensure that the data being passed to the workflow is complete and meets the expected format. Check if the triggering event has all the required information.
  Debugging: Use transaction codes like SWI1 (Work Item Selection) or SWI2_FREQ (Work Item Selection - Frequency) to analyze the workflow instances and see if there are any issues with the parameters.
  Authorization Check: Ensure that the user has the necessary authorizations to execute the workflow and access the required parameters.
  Consult Documentation: Refer to SAP documentation or notes related to the specific workflow you are using to see if there are any known issues or additional configuration steps required.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if it seems to be a bug or a more complex issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SWDD (Workflow Builder) and SWI1 (Work Item Selection) for troubleshooting.
  SAP Notes: Check SAP Notes for any updates or patches related to the specific workflow or error message.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the root cause of the UCUW154 error and implement a suitable solution.