How To Fix CNV_DMC_MC_EXCEPTION077 - Structure &1 is a lookup table; it cannot be mapped to a target structure

CNV_DMC_MC_EXCEPTION077 - Overview

• Message type: E = Error

• Message class: CNV_DMC_MC_EXCEPTION - Exception texts of Migration Object Modeller

• Message number: 077

• Message text: Structure &1 is a lookup table; it cannot be mapped to a target structure

A lookup table contains records that are looked up from a field in
another table to fill in the value of that field. The table can be
referenced by rules and used by mapping operations, but does not
directly provide content for fields in the target system.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION077 - Structure &1 is a lookup table; it cannot be mapped to a target structure ?

  The SAP error message CNV_DMC_MC_EXCEPTION077 indicates that there is an issue with mapping a lookup table to a target structure during a data migration or conversion process. This error typically arises in the context of using the SAP Data Migration Cockpit (DMC) or similar tools when trying to map data from a source system to a target system.
  
  Cause:
  The error occurs because:
  
  Lookup Table Definition: The source structure you are trying to map is defined as a lookup table, which means it is intended to provide reference data rather than being directly mapped to a target structure.
  Mapping Configuration: The mapping configuration may not be set up correctly, leading the system to attempt to map a lookup table directly to a target structure, which is not allowed.
  Data Model Mismatch: There may be a mismatch between the data model of the source and target systems, particularly regarding how lookup tables are handled.
  
  
  Solution:
  To resolve this