How To Fix RS_ADSO_MODEL018 - SID determination mode '&1', field &2 not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_ADSO_MODEL - Messages related to the Datastore Object Backend

• Message number: 018

• Message text: SID determination mode '&1', field &2 not allowed

What causes this issue?

Fields can only have SID determination mode "Reporting" or "Never" set.

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?

Change the SID determination mode.

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 RS_ADSO_MODEL018 - SID determination mode '&1', field &2 not allowed ?

  The SAP error message RS_ADSO_MODEL018 typically occurs in the context of SAP BW (Business Warehouse) when working with Advanced DataStore Objects (ADSO). This error indicates that there is an issue with the SID (Surrogate ID) determination mode for a specific field in the ADSO model.
  Cause:
  The error message RS_ADSO_MODEL018 is triggered when the SID determination mode for a field is set to a value that is not allowed. This can happen due to several reasons:
  
  Incorrect SID Determination Mode: The SID determination mode for the specified field is not compatible with the data model or the field's characteristics.
  Field Configuration: The field may not be configured correctly in the ADSO settings, leading to an invalid SID determination mode.
  Data Model Constraints: The data model may impose certain constraints on which fields can have specific SID determination modes.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check SID Determination Mode:
  
  Go to the ADSO model in the SAP BW modeling tools.
  Check the SID determination mode for the field mentioned in the error message.
  Ensure that the mode is set to a valid option (e.g., "No SID", "SID", "Key", etc.) based on the field's characteristics.
  
  
  
  Adjust Field Configuration:
  
  If the field is not supposed to have a SID, change its configuration to reflect that.
  If it should have a SID, ensure that it is set up correctly in the ADSO.
  
  
  
  Review Data Model:
  
  Review the overall data model to ensure that the field's SID determination mode aligns with the model's requirements.
  Make sure that the field is defined correctly in terms of its data type and characteristics.
  
  
  
  Re-activate the ADSO:
  
  After making changes, re-activate the ADSO to apply the new settings.
  This can often resolve issues related to configuration changes.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidelines on SID determination modes and their allowed configurations.
  
  
  
  Related Information:
  
  SID (Surrogate ID): A surrogate ID is a unique identifier used in data warehousing to represent a key in a dimension table. It helps in managing relationships between fact and dimension tables.
  ADSO (Advanced DataStore Object): ADSOs are a type of data storage in SAP BW that allow for flexible data modeling and storage.
  SAP BW Modeling Tools: These tools are used to create and manage data models in SAP BW, including ADSOs.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting the SAP community for further assistance.