How To Fix E2408 - Alias is not permitted for this table type

E2408 - Overview

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 408

• Message text: Alias is not permitted for this table type

What causes this issue?

An alias for the primary key is not permitted for the type definition
under consideration.
INCLUDE DDDOC_TTYP_ALIAS OBJECT DOKU ID TX

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?

Delete the alias name or check whether the rule above has been broken
and correct the type definition correspondingly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

E2408 - Details

• The SAP error message E2408, which states "Alias is not permitted for this table type," typically occurs when you are trying to use an alias for a table type in a context where it is not allowed. This can happen in various scenarios, such as when working with ABAP programs, database views, or other data manipulation contexts.
  
  Cause:
  
  Table Type Restrictions: In ABAP, certain table types (like standard tables, sorted tables, or hashed tables) have specific rules regarding the use of aliases. The error indicates that the operation you are trying to perform is not compatible with the table type you are using.
  Incorrect Syntax: The syntax used to define or reference the table type may be incorrect, leading to the system not recognizing the alias.
  Contextual Limitations: Some contexts, such as certain SQL operations or function modules, may not support the use of aliases for specific table types.
  
  
  Solution:
  
  Check Table Type: Review the table