How To Fix CFD_DDIC_ADAPTER016 - Append Adapter: Append &1 contains more than one field

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_DDIC_ADAPTER - Custom Fields: CDS Adapter

• Message number: 016

• Message text: Append Adapter: Append &1 contains more than one field

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_DDIC_ADAPTER016 - Append Adapter: Append &1 contains more than one field ?

  The SAP error message CFD_DDIC_ADAPTER016, which states "Append Adapter: Append &1 contains more than one field," typically occurs in the context of data extraction or data transformation processes, particularly when working with Data Transfer Processes (DTP) or DataSources in SAP BW (Business Warehouse).
  Cause:
  This error arises when an append structure (or an append table) is being used in a way that is not compatible with the expected structure of the target data model. Specifically, it indicates that the append structure you are trying to use contains more than one field, but the system expects it to contain only one field. This can happen in scenarios where:
  
  DataSource Configuration: The DataSource is configured to pull data from an append structure that has multiple fields, but the target structure (like a DSO or InfoCube) is expecting a single field.
  Inconsistent Field Mapping: There may be a mismatch in the field mapping between the source and target structures, leading to confusion in how the data should be appended.
  Incorrect Use of Append Structures: The append structure may not be correctly defined or used in the context of the data extraction process.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Append Structure: Review the append structure (e.g., the structure of the table or DataSource) to ensure that it is defined correctly and that it contains the expected fields. If it contains multiple fields, consider whether you need to modify the structure or the way it is being used.
  
  
  Adjust DataSource Configuration: If you are using a DataSource that pulls from an append structure, ensure that the DataSource is configured to handle multiple fields appropriately. You may need to create a new DataSource that correctly maps the fields from the append structure to the target structure.
  
  
  Field Mapping Review: Go through the field mapping in your DTP or transformation to ensure that it aligns with the source structure. Make sure that the target structure can accommodate the fields being pulled from the append structure.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific DataSource or append structure you are working with. There may be specific guidelines or best practices for handling such scenarios.
  
  
  Testing: After making adjustments, test the data extraction or transformation process again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Data Modeling: Familiarize yourself with best practices in data modeling within SAP BW, especially regarding the use of append structures and DataSources.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.