How To Fix E2174 - Maintain and save data class and size category for &

SAP Error Message - Details

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 174

• Message text: Maintain and save data class and size category for &

What causes this issue?

There should be an entry for the technical settings (data type, size
category,...) for each logical table in the ABAP/4 Dictionary which was
stored as a transparent table. It is used to compute the physical
storage space for the table when it is created in the database.

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?

If possible, maintain the technical settings for this table. You can go
to the maintenance screen for the technical settings with <LS>Goto ->
Techn. settings</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E2174 - Maintain and save data class and size category for & ?

  The SAP error message E2174, which states "Maintain and save data class and size category for &," typically occurs when you are trying to create or modify a database table in the Data Dictionary (SE11) without specifying the necessary attributes for the data class and size category.
  Cause:
  This error arises when:
  
  You are creating a new table or modifying an existing one in the Data Dictionary.
  The data class and size category for the table have not been defined or saved.
  The system requires these attributes to manage the storage and performance of the database table effectively.
  
  Solution:
  To resolve this error, follow these steps:
  
  
  Open the Data Dictionary (SE11):
  
  Go to transaction SE11 in your SAP system.
  
  
  
  Select the Table:
  
  Enter the name of the table you are working on and click on "Display" or "Change."
  
  
  
  Maintain Data Class and Size Category:
  
  In the table definition screen, look for the "Technical Settings" button (or tab).
  Click on it to open the technical settings for the table.
  Here, you will find fields for "Data Class" and "Size Category."
  Select the appropriate data class (e.g., APPL0, APPL1, APPL2, etc.) based on the intended use of the table.
  Choose the appropriate size category (e.g., 0, 1, 2, etc.) that reflects the expected size of the table.
  
  
  
  Save the Changes:
  
  After entering the data class and size category, save your changes.
  You should now be able to activate the table without encountering the E2174 error.
  
  
  
  Related Information:
  
  
  Data Class: This defines how the data is stored in the database and can affect performance. Common data classes include:
  
  APPL0: Master data
  APPL1: Transaction data
  APPL2: Organizational data
  
  
  
  Size Category: This indicates the expected size of the table and helps the database manage space allocation. The size categories range from 0 (small) to 5 (very large).
  
  
  Transaction Codes: Familiarize yourself with other related transaction codes such as SE14 (Database Utility) for managing database objects and SE12 (Data Dictionary Display) for viewing table definitions.
  
  
  By ensuring that both the data class and size category are properly defined and saved, you should be able to resolve the E2174 error and proceed with your work in the SAP Data Dictionary.