How To Fix FDT_CORE409 - External reference fields for amount or quantity are not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 409

• Message text: External reference fields for amount or quantity are not supported

What causes this issue?

Field &v1& of DDIC structure &v2& contains a reference to a currency or
quantity field that is not part of the structure. While this
constellation is perfectly fine for a pure ABAP backend application,
this kind of external field references cannot be resolved by a BRFplus
structure that has been bound to the DDIC structure.

System Response

In the BRFplus structure, the references to external fields found in the
DDIC structure are automatically transformed into BRFplus amount or
quantity fields. Although these fields can contain both the numeric part
and the dimension of the value, they cannot be filled with the
appropriate currency or unit of measure that is available at runtime
inside of the DDIC structure.

How to fix this error?

When you pass data to the derived BRFplus structure in a function
context, you cannot use the original DDIC structure because the
externally referenced currencies and units are not supplied. To solve
this problem, proceed as follows:
Create a matching structure data object using the CREATE_DATA_REFERENCE
method of interface IF_FDT_STRUCTURE.
Fill the structure with the desired values. Make sure you have set the
amount and quantity fields completely, that is, with the desired
currency or unit of measure explicitly passed to the respective fields.
You may use data types ELEMENT_AMOUNT and ELEMENT_QUANTITY of interface
IF_FDT_TYPES for that purpose.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE409 - External reference fields for amount or quantity are not supported ?

  The SAP error message FDT_CORE409 indicates that there is an issue with external reference fields being used for amount or quantity in a financial document. This error typically arises in the context of SAP's Financial Data Management (FDM) or when working with certain financial transactions that involve external references.
  Cause:
  The error occurs because the system does not support the use of external reference fields for specific data types, such as amounts or quantities. This can happen in scenarios where:
  
  Data Mapping Issues: The mapping of fields from an external system to SAP does not align correctly, particularly for fields that are expected to hold numeric values (like amounts or quantities).
  Configuration Settings: The configuration in the SAP system may not allow for external references in certain contexts, especially for financial transactions.
  Data Type Mismatch: The data being passed from an external source may not conform to the expected data types in SAP.
  
  Solution:
  To resolve the FDT_CORE409 error, consider the following steps:
  
  
  Check Field Mappings: Review the mappings between the external system and SAP to ensure that the fields for amounts and quantities are correctly defined and do not use external references.
  
  
  Adjust Configuration: If applicable, check the configuration settings in SAP to see if there are options to allow or disallow external references for amounts and quantities. This may involve working with your SAP Basis or configuration team.
  
  
  Data Validation: Ensure that the data being sent to SAP is validated and conforms to the expected formats. For example, amounts should be numeric and not contain any external references.
  
  
  Use Internal Fields: If external references are not supported, consider using internal fields that are designed for amounts and quantities instead of external references.
  
  
  Consult Documentation: Review SAP documentation or notes related to the specific module you are working with to understand any limitations or requirements regarding external references.
  
  
  Error Logs: Check the error logs for more detailed information about the context in which the error occurred. This can provide insights into what specific data or transaction triggered the error.
  
  
  Related Information:
  
  SAP Notes: Look for SAP Notes related to FDT_CORE409 for any patches or updates that may address this issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that no new issues arise from the changes made.
  
  By following these steps, you should be able to identify the root cause of the FDT_CORE409 error and implement a suitable solution.