How To Fix /SAPAPO/RET_MESSAGES156 - Maximum must be greater than or equal to zero

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RET_MESSAGES -

• Message number: 156

• Message text: Maximum must be greater than or equal to zero

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/RET_MESSAGES156 - Maximum must be greater than or equal to zero ?

  The SAP error message /SAPAPO/RET_MESSAGES156 Maximum must be greater than or equal to zero typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with the configuration of certain parameters, particularly in the context of planning or forecasting.
  Cause:
  This error message indicates that a maximum value that has been set in a configuration or planning parameter is less than zero. This can happen in various scenarios, such as:
  
  Forecasting Settings: If you are setting up forecasting models and have defined a maximum limit for a parameter (like forecast values, safety stock, etc.) that is negative.
  Planning Parameters: In planning books or data views, if a maximum value for a key figure is incorrectly set to a negative number.
  Data Entry Errors: Manual data entry errors where a user has inadvertently entered a negative value where only non-negative values are acceptable.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration Settings:
  
  Navigate to the relevant configuration settings in SAP APO where the maximum value is defined.
  Ensure that all maximum values are set to zero or a positive number.
  
  
  
  Review Planning Books and Key Figures:
  
  Go to the planning book or data view where the error is occurring.
  Check the key figures and their settings to ensure that no maximum values are set to negative.
  
  
  
  Data Validation:
  
  If the error arises from data entry, validate the data being input to ensure that all values conform to the required constraints (i.e., no negative values for maximum limits).
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources related to the specific module or function you are working with to understand the expected values and constraints.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the changes in a development or test environment before applying them to production to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, specific versions of SAP APO may have bugs that are documented in SAP Notes.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/DP for demand planning or /SAPAPO/SC for supply chain planning, where you might encounter this error.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and correct the cause of the error message /SAPAPO/RET_MESSAGES156.