How To Fix D7020 - &1 returned with exception WRONG_TYPECLASS

D7020 - Overview

• Message type: E = Error

• Message class: D7 - Messages for Development Class SDBO

• Message number: 020

• Message text: &1 returned with exception WRONG_TYPECLASS

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 D7020 - &1 returned with exception WRONG_TYPECLASS ?

  The SAP error message D7020 with the exception WRONG_TYPECLASS typically indicates that there is a mismatch in the expected data type or class for a particular operation or function in the SAP system. This error can occur in various contexts, such as during data processing, function module calls, or when working with specific data structures.
  
  Cause:
  
  Data Type Mismatch: The most common cause is that the data being processed does not match the expected type. For example, if a function module expects a certain type of input (like a string or integer) but receives a different type, this error can occur.
  Incorrect Configuration: Sometimes, the configuration settings in the system may not align with the expected data types, leading to this error.
  Programming Errors: If custom ABAP code is involved, there may be programming errors where the wrong data types are being passed to functions or methods.
  
  
  Solution:
  
  Check Data Types: Review the data types of