How To Fix RSDD_LM018 - Field '&1' of provider (union) '&2' has already been added

RSDD_LM018 - Overview

• Message type: E = Error

• Message class: RSDD_LM - Messages for Lean Modeler (API and RSLIMO)

• Message number: 018

• Message text: Field '&1' of provider (union) '&2' has already been added

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD_LM018 - Field '&1' of provider (union) '&2' has already been added ?

  The SAP error message RSDD_LM018 indicates that there is a problem with a data provider (specifically a union provider) in SAP BW (Business Warehouse). The error message states that a field (denoted as '&1') has already been added to the provider (denoted as '&2'). This typically occurs during the modeling of InfoProviders, particularly when working with Union or MultiProvider objects.
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  Duplicate Field Definition: The field you are trying to add to the union provider has already been defined in the provider. This can happen if you are trying to include the same field from multiple data sources or if the field is already part of the union definition.
  Incorrect Mapping: There may be an issue with how fields are mapped from the underlying data sources to the union provider.
  Modeling Errors: Errors in the modeling process, such as incorrect joins or unions, can