How To Fix OL318 - Field &-& has an invalid data type

OL318 - Overview

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 318

• Message text: Field &-& has an invalid data type

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 OL318 - Field &-& has an invalid data type ?

  The SAP error message OL318, which states "Field &-& has an invalid data type," typically occurs when there is a mismatch between the expected data type of a field and the actual data type being used in a program or configuration. This error can arise in various contexts, such as during data entry, report generation, or when executing a transaction.
  Causes:
  
  Data Type Mismatch: The field in question is expected to have a specific data type (e.g., character, numeric, date) but is receiving a different type.
  Incorrect Field Mapping: In custom programs or enhancements, fields may be incorrectly mapped to data types that do not match the underlying database or structure definitions.
  
  Configuration Issues: In some cases, configuration settings in the SAP system may lead to incorrect data type definitions.
  Custom Development Errors: If there are custom ABAP programs or enhancements, there may be coding errors that lead to this issue.
  
  Solutions:
  
  Check Field Definitions: Verify the