How To Fix MDG_IDM_CUSTOMIZING003 - Output length of field &1 in key structure &2 exceeds internal length

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_IDM_CUSTOMIZING - Key Mapping: Customizing related error messages

• Message number: 003

• Message text: Output length of field &1 in key structure &2 exceeds internal length

What causes this issue?

The &V2& key structure that is assigned to the &V3&
<DS:DE.MDG_IDS_TYPE_CODE_BS>object ID type</> and that belongs to the
&V4& <DS:DE.MDG_OBJECT_TYPE_CODE_BS>business object type</> consists of
two or more key components. The output length of the &V1& key component
is greater than its internal length.
Key mapping evaluates the external format of Object IDs. To avoid the
truncation of key components, you must ensure one of the following
conditions is true:
The output length of every key component is shorter than or equal to its
input length.
A <DS:DE.MDG_CC_OBJECT_ID_DELIMITER>delimiter</> is explicitly defined
for the &V2&.key structure

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

You cannot enable business object type &V4& for key mapping.

How to fix this error?

Complete one of the following actions in Customizing for <LS>Key Mapping
</> under <DS:SIMG.MDG_IDM_007>Assign Key Structures to Object
Identifiers</>
Change the &V2& key structure so that the internal length of all key
fields is shorter than or equal to the external length.
Define a delimiter for the &V2& key structure. Ensure the delimiter is
not a regular character within one of the key fields.
Reassign the &V4& <DS:DE.MDG_OBJECT_TYPE_CODE_BS>Business Object Type</>
to the corresponding main context.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_IDM_CUSTOMIZING003 - Output length of field &1 in key structure &2 exceeds internal length ?

  The SAP error message MDG_IDM_CUSTOMIZING003 indicates that there is a mismatch between the output length of a field in a key structure and the internal length defined for that field in the system. This typically occurs in the context of Master Data Governance (MDG) when customizing key structures for data models.
  
  Cause:
  The error is caused by the following scenarios:
  
  Field Length Mismatch: The output length of a field defined in the key structure exceeds the maximum length that can be handled internally by the system.
  Custom Fields: If you have added custom fields to the key structure, the lengths of these fields may not be properly defined or may exceed the limits set by the system.
  Data Model Configuration: Incorrect configuration in the data model or key structure settings can lead to this error.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Field Lengths:
  
  Go to the customizing settings for the key structure in