How To Fix /SAPAPO/FCST256 - Conversion Overflow - value lies outside the permitted range

/SAPAPO/FCST256 - Overview

• Message type: E = Error

• Message class: /SAPAPO/FCST -

• Message number: 256

• Message text: Conversion Overflow - value lies outside the permitted range

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/FCST256 - Conversion Overflow - value lies outside the permitted range ?

  The SAP error message /SAPAPO/FCST256 Conversion Overflow - value lies outside the permitted range typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when dealing with forecast data. This error indicates that a value being processed exceeds the allowable range for the data type being used, leading to an overflow condition.
  Causes:
  
  Data Type Limitations: The value being processed may exceed the maximum limit of the data type defined in the system (e.g., integer, float).
  Incorrect Data Input: There may be erroneous or unexpected data being input into the system, such as extremely large numbers or incorrect formats.
  Calculation Errors: During calculations (e.g., aggregations, forecasts), the resulting value may exceed the permissible range.
  
  Configuration Issues: There may be issues with the configuration of the forecasting model or parameters that lead to unrealistic values.
  
  Solutions:
  
  Check Input Data: Review the input data for any anomalies or values that are excessively large or incorrectly formatted.