How To Fix 5P209 - &: Field definition and value are not compatible

5P209 - Overview

• Message type: E = Error

• Message class: 5P - Error Messages for Schema, Pers.Calc.Rule and Feature Checks

• Message number: 209

• Message text: &: Field definition and value are not compatible

What causes this issue?

You have used a decision operation. The following two cases are
possible:
1. Decision operation without comparison:
You have specified a value for the variable key which does not match
the field type of the decision operation. You have, for example,
specified an alphanumeric value instead of a numeric one as defined in
the Data Dictionary.
2. Decision operation with comparision:
You have specified a value for the variable key which does not match
the field type of the decision operation. In comparisons, you may only
specify the characters '<', '>', '=' or '*' in the variable key. Or:
both fields for the comparison (the decision operation field and the
direct value or the comparison field) must be of the same type.

How to fix this error?

Check the values entered in the variable key against the decision
operation fields or the values before and behind the '?' character.

Error message extract from SAP system. Copyright SAP SE.

5P209 - Details

• The SAP error message 5P209, which states "Field definition and value are not compatible," typically occurs when there is a mismatch between the data type or format of a field and the value being assigned to it. This can happen in various contexts, such as during data entry, data import, or when executing a program that processes data.
  Causes:
  
  Data Type Mismatch: The value being entered does not match the expected data type of the field (e.g., entering a string in a numeric field).
  Field Length Exceeded: The value exceeds the maximum length defined for the field.
  Invalid Characters: The value contains characters that are not allowed for that field (e.g., special characters in a numeric field).
  Incorrect Field Configuration: The field may be configured incorrectly in the underlying data structure or table.
  Custom Code Issues: If there is custom ABAP code involved, it may not be handling the data correctly.
  
  Solutions:
  
  Check Data Types: Ensure that the