How To Fix DMC_GENERAL034 - Split cardinality changed; Rule assignments are initialised

DMC_GENERAL034 - Overview

• Message type: E = Error

• Message class: DMC_GENERAL - MWB: General Messages

• Message number: 034

• Message text: Split cardinality changed; Rule assignments are initialised

What causes this issue?

The split cardinality of a structure has been changed. The rulecalls of
all fields marked as 'split relevant' are being reset.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

DMC_GENERAL034 - Details

• The SAP error message DMC_GENERAL034 indicates that there has been a change in the cardinality of a split in a data flow, which has led to the reinitialization of rule assignments. This typically occurs in the context of SAP Data Management and Data Integration processes, particularly when working with SAP Data Intelligence or SAP Data Hub.
  
  Cause:
  
  Change in Data Model: The cardinality of a split may have changed due to modifications in the underlying data model or schema. For example, if a source data structure was altered to allow for more or fewer records, this could trigger the error.
  Configuration Changes: Changes in the configuration of the data flow or the rules associated with the split can also lead to this error. If the rules are not compatible with the new cardinality, they may need to be re-evaluated.
  Data Source Changes: If the data source itself has been modified (e.g., new fields added,