How To Fix APS_CCV_DATA_SOURCE006 - Cardinality is likely 'Zero or One'

APS_CCV_DATA_SOURCE006 - Overview

• Message type: E = Error

• Message class: APS_CCV_DATA_SOURCE - Data sources

• Message number: 006

• Message text: Cardinality is likely 'Zero or One'

What causes this issue?

As you have mapped all key fields of the associated data source, the
result set is likely to consist of one table row at the most.

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?

It is recommended to change the cardinality to ?Zero or One?.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

APS_CCV_DATA_SOURCE006 - Details

• The SAP error message APS_CCV_DATA_SOURCE006, which indicates that "Cardinality is likely 'Zero or One'," typically arises in the context of data modeling or data source configuration within SAP systems, particularly in SAP BW (Business Warehouse) or SAP HANA environments. This error suggests that there is a mismatch in the expected cardinality of a data source or a data model, meaning that the system expects either zero or one instance of a particular entity, but the configuration may not align with this expectation.
  
  Cause:
  
  Data Model Configuration: The error often occurs when the data model is configured incorrectly, leading to a situation where the system expects a one-to-one relationship but finds a one-to-many or many-to-many relationship instead.
  Data Source Definition: If a data source is defined with incorrect cardinality settings, it can lead to this error. For example, if a data source is expected to return a single record but is configured to return