How To Fix ACI_COMPILER_GENERIC016 - Expected "&2" or "&3", not "&1"

SAP Error Message - Details

• Message type: E = Error

• Message class: ACI_COMPILER_GENERIC - EXPERIMENTAL, DON'T USE (ACI: Generic Compiler Messages)

• Message number: 016

• Message text: Expected "&2" or "&3", not "&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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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 ACI_COMPILER_GENERIC016 - Expected "&2" or "&3", not "&1" ?

  The SAP error message ACI_COMPILER_GENERIC016 typically indicates a syntax error in your ABAP code or a problem with the structure of your data. The message format suggests that the compiler expected a specific type of data or structure but encountered something else instead. Here’s a breakdown of the components of the error message:
  
  Expected "&2" or "&3": This part of the message indicates the expected data types or structures.
  Not "&1": This part indicates the actual data type or structure that was found, which does not match the expected types.
  
  Cause
  The error can occur due to several reasons:
  
  Data Type Mismatch: You may be trying to assign a value of one data type to a variable of another incompatible data type.
  Incorrect Structure: If you are working with structures or tables, the fields may not match the expected structure.
  Syntax Errors: There may be a syntax error in your code that leads to the compiler misinterpreting the data types.
  Incompatible Function Parameters: If you are calling a function module or method, the parameters passed may not match the expected types.
  
  Solution
  To resolve the error, you can take the following steps:
  
  Check Data Types: Review the data types of the variables involved in the operation that triggered the error. Ensure that they match the expected types.
  Review Structures: If you are using structures or internal tables, verify that the fields are defined correctly and match the expected structure.
  Examine Function Calls: If the error occurs during a function call, check the parameter types and ensure they align with the function's definition.
  Debugging: Use the ABAP debugger to step through the code and identify where the mismatch occurs. This can help you pinpoint the exact line causing the issue.
  Consult Documentation: If you are using standard SAP function modules or methods, refer to the SAP documentation to understand the expected parameters and their types.
  
  Related Information
  
  ABAP Data Types: Familiarize yourself with the various ABAP data types and their compatibility.
  SAP Notes: Check SAP Notes for any known issues related to the error message.
  Community Forums: Consider searching or posting on SAP community forums for additional insights from other developers who may have encountered the same issue.
  
  By carefully reviewing your code and ensuring that all data types and structures are correctly defined and used, you should be able to resolve the ACI_COMPILER_GENERIC016 error.