How To Fix W_CB345 - Specify a screen

SAP Error Message - Details

• Message type: E = Error

• Message class: W_CB -

• Message number: 345

• Message text: Specify a screen

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_CB345 - Specify a screen ?

  SAP Error Message:
  
  W_CB345 Specify a screen
  
  Cause:
  The warning message W_CB345 Specify a screen typically occurs in SAP when a screen number is expected but has not been provided or is missing in a particular context. This often happens during the configuration or customization of transactions, reports, or modules where the system requires a screen number to proceed but the input is either blank or invalid.
  For example, this message can appear in scenarios such as:
  
  When defining or calling a screen in a module pool program or a custom transaction.
  During configuration steps where a screen number must be specified (e.g., in IMG activities or when setting up certain business processes).
  When a user or program tries to navigate to a screen but the screen number parameter is not passed or is incorrect.
  
  
  Solution:
  
  
  Check the Screen Number Input:
  
  Verify that the screen number is correctly specified wherever it is required.
  If you are running a program or transaction, ensure that the screen number parameter is passed correctly.
  
  
  
  Review Custom Code or Configuration:
  
  If this occurs in a custom program or module pool, check the code where the screen is called (e.g., CALL SCREEN <screen_number>).
  Make sure the screen number variable is initialized and holds a valid value before the call.
  
  
  
  Correct Configuration Settings:
  
  If the message appears during configuration, revisit the IMG step or customizing activity and ensure that all mandatory fields, especially screen numbers, are filled in.
  
  
  
  Debugging:
  
  Use the debugger to trace where the screen number is expected and why it is missing.
  Check the flow of data and parameters leading to the screen call.
  
  
  
  Consult SAP Notes:
  
  Search for SAP Notes related to message W_CB345 for any known issues or patches.
  
  
  
  
  Related Information:
  
  Message Class: CB (often related to cross-application components or specific modules)
  Message Type: W (Warning) — the process might continue but with potential issues.
  Common Contexts: Module pool programming, screen navigation, transaction configuration.
  Transaction to Check Messages: Use transaction SE91 to look up message W_CB345 for detailed text and context.
  Debugging Tools: SE80 (for programs), SE41 (for screen painter), SE93 (for transaction codes).
  
  
  If you provide the exact context or transaction where this message appears, I can help with more specific guidance.