Message type: E = Error
Message class:  SEPMH_DG - EPM HANA DG - Messages 
Message number: 038
Message text: Attribute rule for &1-&2 is no valid value listener
Attribute rule for attribute &1-&2 is no valid attribute value listener.
None.
Implementation of attribute rule for attribute  '<(>&<)>1' - '&2' must
implement the generic listener interface
'IF_EPMH_DGAR_VALUE_PROPAGATION'.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message SEPMH_DG038, which states "Attribute rule for &1-&2 is no valid value listener," typically occurs in the context of SAP's Master Data Governance (MDG) or similar applications where attribute rules are defined for data validation and processing.
Cause: This error usually arises due to one of the following reasons: Invalid Configuration: The attribute rule defined for the specified attributes (&1 and &2) is not correctly configured. This could be due to a missing or incorrect value listener that is supposed to validate or process the attribute values. Missing Value Listener: The value listener that is supposed to handle the attribute rule is either not implemented or not activated in the system. Data Inconsistency: There may be inconsistencies in the data being processed, which do not meet the criteria defined in the attribute rule. Custom Development Issues: If there are custom enhancements or developments related to the attribute rules, they may not be functioning
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