How To Fix COOPC303 - Conversion error at item &1; check the value formats

SAP Error Message - Details

• Message type: E = Error

• Message class: COOPC - Messages for SAP-OPC Integration

• Message number: 303

• Message text: Conversion error at item &1; check the value formats

What causes this issue?

When <DS:GLOS.D39F4241B0CAD411B11B0008C784EFB1>OPC items</> are read,
values from a lower-level system are transferred to the SAP system. When
they are written, they are sent from the SAP system to a lower-level
system. The value formats between these systems must be the same.
Otherwise, the system tries to convert them.
In this case, the system tried to convert the formats for item &V1&
(plant &V2&). However, an error occurred.
<ZU>Example:</>
An OPC item has the type <LS>Integer</> (figures). However, the user
tried to write a value that contains letters.

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?

Check whether the item to be read or written has the correct format.
Make sure that only adequate values are written to this item.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message COOPC303 - Conversion error at item &1; check the value formats ?

  The SAP error message COOPC303 indicates a conversion error at a specific item, which suggests that there is an issue with the format of the data being processed. This error typically occurs in the context of controlling (CO) or production planning (PP) modules when the system is unable to convert a value due to incorrect formatting or incompatible data types.
  Causes:
  
  Incorrect Data Format: The value being processed may not match the expected format (e.g., numeric values being passed as strings).
  Data Type Mismatch: The system may be expecting a certain data type (e.g., integer, decimal) but is receiving another.
  Missing or Invalid Data: Required fields may be empty or contain invalid characters.
  Configuration Issues: There may be issues with the configuration of the relevant data types or fields in the system.
  Localization Settings: Different regional settings (like decimal separators) may cause conversion issues.
  
  Solutions:
  
  Check Input Values: Review the values being processed for the item indicated in the error message. Ensure they conform to the expected formats (e.g., numeric values should not contain letters or special characters).
  Data Type Verification: Ensure that the data types of the fields being processed match the expected types in the SAP system.
  Field Configuration: Check the configuration settings for the relevant fields in the SAP system to ensure they are set up correctly.
  Review Custom Code: If there is any custom code or user exits involved in the processing, review them for potential issues that could lead to data conversion errors.
  Localization Settings: Verify that the localization settings (like number formats) are correctly configured for the user or system settings.
  Debugging: If the issue persists, consider using the SAP debugger to trace the execution and identify where the conversion error occurs.
  
  Related Information:
  
  Transaction Codes: You may want to check relevant transaction codes like CO01 (Create Production Order), CO02 (Change Production Order), or CO03 (Display Production Order) depending on the context of the error.
  SAP Notes: Search for SAP Notes related to COOPC303 for any known issues or patches that may address this error.
  Documentation: Review SAP documentation for the specific module you are working with to understand the expected data formats and configurations.
  
  If the problem continues after trying the above solutions, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.