How To Fix /PM0/ALH_MESSAGE001 - Error in serializing: Parameter IN_DATA_TYPE has invalid value (&1)

/PM0/ALH_MESSAGE001 - Overview

• Message type: E = Error

• Message class: /PM0/ALH_MESSAGE -

• Message number: 001

• Message text: Error in serializing: Parameter IN_DATA_TYPE has invalid value (&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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/PM0/ALH_MESSAGE001 - Details

• The SAP error message /PM0/ALH_MESSAGE001 Error in serializing: Parameter IN_DATA_TYPE has invalid value (&1) typically indicates that there is an issue with the data type being passed to a function or method in the SAP system. This error is often related to the serialization process, where data is being converted into a format suitable for transmission or storage.
  
  Cause:
  
  Invalid Data Type: The parameter IN_DATA_TYPE is expected to have a specific value, but it is receiving an invalid or unexpected value. This could be due to a programming error, incorrect configuration, or data corruption.
  Mismatch in Data Structure: If the data structure being serialized does not match the expected format or type, this error can occur.
  Custom Code Issues: If there are custom developments or enhancements in the system, they might be passing incorrect values to the serialization function.
  
  
  Solution:
  
  Check Input Values: Review the values being passed to the function or method that is generating