How To Fix /SAPAPO/ATP456 - Invalid parameter values when calling function module &1

/SAPAPO/ATP456 - Overview

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 456

• Message text: Invalid parameter values when calling function module &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP456 - Invalid parameter values when calling function module &1 ?

  The SAP error message /SAPAPO/ATP456 Invalid parameter values when calling function module &1 typically occurs in the context of Advanced Planning and Optimization (APO) when there are issues with the parameters being passed to a function module. This error can arise due to various reasons, including incorrect data types, missing mandatory fields, or invalid values.
  Causes:
  
  Invalid Parameter Values: The parameters being passed to the function module do not meet the expected criteria (e.g., wrong data type, out of range values).
  Missing Mandatory Fields: Some required fields may not have been populated, leading to the function module being unable to execute properly.
  
  Configuration Issues: There may be issues with the configuration settings in APO that affect how the function module operates.
  Data Inconsistencies: Inconsistencies in master data or transaction data can lead to invalid parameter values.
  Custom Code: If there is custom code involved, it may not be handling the parameters correctly.
  
  Solutions:
  
  Check Parameter Values: Review the