How To Fix MC750 - Field &-& (type conflict in selection condition)

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 750

• Message text: Field &-& (type conflict in selection condition)

What causes this issue?

In a selection condition, a constant whose type does not agree with the
type of the field was defined.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Change the constant so that it agrees with the type of the field. Empty
constants are absolutely forbidden.
The following checks are made for the type:
character-like types such as <LS>CHAR</> and <LS>LANG</>:
The constants must be enclosed in apostrophes and may contain any
number of characters. Apostrophes within the constants have to be
included twice.
character-like numeric types such as <LS>NUMC</>, <LS>DATS</>,
<LS>TIMS</> etc.:
The constants must be enclosed in apostrophes and may only contain
digits. For NUMC, the first position may be sign + or -.
Integer types <LS>INT1</> and <LS>INT4</>:
The constant is not enclosed in apostrophes. It contains only digits.
For INT4, the first position may be sign + or - .

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC750 - Field &-& (type conflict in selection condition) ?

  The SAP error message MC750 ("Field &-& (type conflict in selection condition)") typically occurs in the context of reporting or data selection in SAP, particularly when there is a mismatch in data types between the fields being used in a selection condition. This can happen in various SAP modules, including SAP MM (Materials Management) and SAP SD (Sales and Distribution).
  Cause:
  The error is usually caused by one of the following reasons:
  
  Data Type Mismatch: The field being referenced in the selection condition has a different data type than what is expected. For example, trying to compare a numeric field with a character field.
  Incorrect Field Usage: Using a field in a selection condition that is not appropriate for the data type or context.
  Custom Code Issues: If there are custom programs or enhancements, they may be incorrectly handling data types.
  
  Solution:
  To resolve the MC750 error, you can take the following steps:
  
  
  Check Field Definitions: Verify the data types of the fields involved in the selection condition. Ensure that they are compatible. You can do this by checking the data dictionary (transaction SE11) for the relevant tables and fields.
  
  
  Review Selection Conditions: Look at the selection conditions in your report or transaction. Make sure that you are not trying to compare fields of different types. For example, if you are comparing a numeric field with a string, you will need to convert one of them to match the other.
  
  
  Adjust Custom Code: If the error arises from custom ABAP code, review the code to ensure that data types are being handled correctly. Use appropriate conversion functions (like CONCATENATE, TO_CHAR, TO_NUMBER, etc.) to ensure compatibility.
  
  
  Test with Different Data: Sometimes, the issue may be data-specific. Test the selection with different data sets to see if the error persists.
  
  
  Consult Documentation: If you are using standard SAP reports or transactions, refer to the SAP documentation or notes related to the specific transaction or report for any known issues or updates.
  
  
  Seek Help from SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. Provide them with details about the error, the context in which it occurs, and any relevant code or configuration.
  
  
  Related Information:
  
  Transaction Codes: You may encounter this error in various transaction codes, especially those related to reporting (e.g., MC.9, MC.1, etc.).
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on similar issues.
  Data Dictionary: Familiarize yourself with the data dictionary (SE11) to understand field types and relationships better.
  
  By following these steps, you should be able to identify and resolve the cause of the MC750 error in your SAP environment.