How To Fix /SAPAPO/MC01158 - Save all data before generation

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 158

• Message text: Save all data before generation

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01158 - Save all data before generation ?

  The SAP error message /SAPAPO/MC01158 typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an attempt to generate or execute a process without saving the current data. This error is a safeguard to ensure that any unsaved changes are not lost during the generation process.
  Cause:
  The error message /SAPAPO/MC01158 Save all data before generation is triggered when:
  
  You have made changes to planning data or settings in the APO system.
  You attempt to execute a generation process (like a planning run, heuristic, or optimization) without saving those changes first.
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Save Your Changes: Before attempting to generate or execute any process, ensure that you save all changes made in the planning book or any other relevant screens.
  
  Look for a "Save" button or use the keyboard shortcut (usually Ctrl + S) to save your work.
  
  
  
  Re-attempt the Generation: After saving, try to execute the generation process again. The error should no longer appear if all changes have been saved properly.
  
  
  Check for Additional Errors: If the error persists after saving, check for any other error messages or warnings that may indicate additional issues that need to be addressed.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP APO, such as /SAPAPO/MC62 for planning books or /SAPAPO/MC8A for running heuristics.
  User Authorization: Ensure that you have the necessary authorizations to save data and execute generation processes in the APO system.
  System Configuration: If you frequently encounter this error, it may be worth checking the system configuration or consulting with your SAP Basis or APO support team to ensure that there are no underlying issues affecting data saving and generation processes.
  
  By following these steps, you should be able to resolve the error and continue with your planning activities in SAP APO.