How To Fix CME_DTYPE021 - You cannot shorten the length

CME_DTYPE021 - Overview

• Message type: E = Error

• Message class: CME_DTYPE - CME Data Type: Checks

• Message number: 021

• Message text: You cannot shorten the length

What causes this issue?

The data type has versions - higher versions must remain compatible
with lower versions.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CME_DTYPE021 - You cannot shorten the length ?

  The SAP error message CME_DTYPE021 with the description "You cannot shorten the length" typically occurs when you are trying to change the length of a data element or field in a way that is not allowed by the system. This can happen in various contexts, such as when modifying database tables, structures, or data elements in the ABAP Dictionary.
  
  Cause:
  
  Data Type Constraints: The field you are trying to modify has existing data that exceeds the new length you are trying to set. SAP does not allow you to shorten the length of a field if it would result in data loss.
  Dependencies: Other objects (like tables, views, or programs) may depend on the current length of the field, and changing it could lead to inconsistencies.
  Database Constraints: The underlying database may have constraints that prevent the modification of the field length.
  
  
  Solution:
  
  
  Check Existing Data: Before attempting to shorten the length of a field, check