How To Fix CRM_MKTLIST_PACKAGE064 - Step "&1" marked; define valid mapping format

CRM_MKTLIST_PACKAGE064 - Overview

• Message type: E = Error

• Message class: CRM_MKTLIST_PACKAGE - CRM Marketing: Messages External List Management

• Message number: 064

• Message text: Step "&1" marked; define valid mapping format

What causes this issue?

The step "&V1&" with the technical ID &V2& is marked but the given
mapping format &V3& is not defined

System Response

The mapping step cannot be processed without a valid mapping format.

How to fix this error?

Enter a valid mapping format.

Procedure for System Administrators

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.

CRM_MKTLIST_PACKAGE064 - Details

• The SAP error message "CRM_MKTLIST_PACKAGE064 Step '&1' marked; define valid mapping format" typically occurs in the context of the SAP Customer Relationship Management (CRM) module, particularly when dealing with marketing lists or data mapping processes. This error indicates that there is an issue with the mapping format defined for a particular step in the marketing list processing.
  
  Cause:
  
  Invalid Mapping Format: The error suggests that the mapping format defined for the step is not valid. This could be due to incorrect field definitions, data types, or mismatches between the source and target fields.
  
  Configuration Issues: There may be configuration issues in the marketing list setup or in the data mapping settings.
  Data Quality Issues: The data being processed may not conform to the expected formats or types, leading to mapping failures.
  
  
  Solution:
  
  
  Check Mapping Configuration:
  
  Go to the relevant transaction or configuration area where the mapping is defined (e.g., transaction CRMD_ORDER or the relevant customizing settings).
  Review the