How To Fix M8102 - Field overflow (&) (leave out line <& &>)

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 102

• Message text: Field overflow (&) (leave out line <& &>)

What causes this issue?

When calculating, the system encounters numbers that are so large
that it is not possible to represent them in the display fields.

How to fix this error?

Check whether or not you have entered numbers that are too large: if
you have, change your input.
If the invoice actually contains such large figures, you must split
the invoice up and enter it as two (or more) documents.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8102 - Field overflow (&) (leave out line <& &>) ?

  The SAP error message M8102 "Field overflow (&) (leave out line <& &>)" typically occurs in the context of material management or inventory management processes. This error indicates that a field in the system has exceeded its defined length or capacity, which can happen during data entry or processing.
  Cause:
  
  Field Length Exceeded: The most common cause of this error is that the data being entered into a field exceeds the maximum length defined for that field in the database or program.
  Incorrect Data Format: If the data format does not match the expected format (e.g., entering a string in a numeric field), it can lead to this error.
  Configuration Issues: Sometimes, the configuration settings in the SAP system may not align with the data being processed, leading to overflow errors.
  Custom Development: If there are custom programs or enhancements in place, they may not handle certain data correctly, leading to overflow issues.
  
  Solution:
  
  Check Field Lengths: Review the field definitions in the relevant tables or structures to ensure that the data being entered does not exceed the defined lengths.
  Data Validation: Implement validation checks to ensure that the data being entered conforms to the expected formats and lengths before processing.
  Review Custom Code: If there are custom developments, review the code to ensure that it properly handles data and does not lead to overflow situations.
  Adjust Configuration: If the issue is related to configuration, work with your SAP Basis or functional team to adjust the settings as necessary.
  Error Handling: Implement error handling in your programs to catch and manage such errors gracefully, providing users with meaningful feedback.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using transaction codes like MIGO (Goods Movement), MB1A (Goods Withdrawal), or others related to inventory management.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Debugging: If you have access to debugging tools, you can trace the program execution to identify where the overflow is occurring and what data is causing it.
  User Training: Ensure that users are trained on the correct data entry procedures to minimize the risk of inputting data that could lead to overflow errors.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or your internal SAP team for further assistance.