How To Fix RSO_RES_ADSO266 - Field &1: Extending a field of type NUMC is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_RES_ADSO - Datastore Object

• Message number: 266

• Message text: Field &1: Extending a field of type NUMC is not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSO_RES_ADSO266 - Field &1: Extending a field of type NUMC is not allowed ?

  The SAP error message RSO_RES_ADSO266, which states "Field &1: Extending a field of type NUMC is not allowed," typically occurs in the context of SAP BW (Business Warehouse) when you are trying to modify or extend a field that is defined as a NUMC (Numeric Character) type in an Advanced DataStore Object (ADSO).
  Cause:
  
  Field Type Restriction: The NUMC data type is designed to hold numeric values as character strings, and it has specific length constraints. Extending a field of this type is not allowed because it could lead to inconsistencies in data storage and retrieval.
  Data Model Changes: You might be trying to change the structure of an existing ADSO or InfoObject that has already been defined with a NUMC field, which is not permitted.
  
  Solution:
  
  Check Field Definition: Review the definition of the field in question. If you need to change the length or characteristics of a NUMC field, you will need to create a new field instead of modifying the existing one.
  Create a New Field: If you need a field with a different length or characteristics, create a new field with the desired properties and use that in your data model.
  Data Model Adjustments: If the change is necessary for your data model, consider redesigning the data model to accommodate the new requirements without violating the constraints of the NUMC type.
  Consult Documentation: Refer to SAP documentation or help resources for guidelines on field types and their limitations in ADSO.
  
  Related Information:
  
  NUMC Data Type: Understand the characteristics of the NUMC data type, including its maximum length (typically 16 characters) and its intended use for numeric values stored as strings.
  SAP BW Modeling: Familiarize yourself with best practices in SAP BW modeling, especially regarding field types and data structure design.
  SAP Notes and Community: Check SAP Notes for any updates or specific guidance related to this error message. The SAP Community forums can also be a valuable resource for troubleshooting and solutions shared by other users.
  
  If you continue to face issues, consider reaching out to your SAP support team or consulting with an SAP BW expert for further assistance.