How To Fix C1172 - Enter a class and a class type

C1172 - Overview

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 172

• Message text: Enter a class and a class type

What causes this issue?

A characteristic of data type UDEF (user-defined data type) must
contain both a class and a class type. At least one of these entries is
missing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1172 - Enter a class and a class type ?

  The SAP error message C1172 ("Enter a class and a class type") typically occurs in the context of class management in SAP, particularly when working with classification systems. This error indicates that the system requires both a class and a class type to proceed, but one or both of these fields have not been filled in.
  
  Cause:
  
  Missing Input: The user has not entered a class or a class type in the relevant fields.
  Incorrect Navigation: The user may have navigated to a screen or transaction that requires these inputs but did not provide them.
  
  Configuration Issues: There may be issues with the configuration of the classification system in SAP, leading to the requirement for these fields not being properly set.
  
  
  Solution:
  
  
  Enter Required Fields: Ensure that both the class and class type fields are filled in correctly. 
  
  Class: This is typically a specific category or grouping for the object you are classifying.
  Class Type: This defines