How To Fix WER444 - Type &1 is not a valid predefined type

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 444

• Message text: Type &1 is not a valid predefined type

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WER444 - Type &1 is not a valid predefined type ?

  SAP Error Message:
  
  WER444 Type &1 is not a valid predefined type
  
  Cause:
  This error occurs when a program or configuration tries to use a type that is expected to be a predefined (standard) type in SAP, but the specified type name (&1) is not recognized as such. In other words, the system cannot find the predefined data type with the name provided.
  Common scenarios include:
  
  A typo or incorrect type name used in ABAP code or configuration.
  Using a type that is not defined or not available in the current SAP system/version.
  Attempting to use a type that is custom or user-defined but referenced as a predefined type.
  Issues in data element or domain definitions where the type is incorrectly specified.
  
  
  Solution:
  
  
  Check the Type Name:
  
  Verify the exact type name used in the code or configuration.
  Ensure it matches one of the standard predefined types in SAP (e.g., I, C, D, P, N, F, etc.).
  
  
  
  Correct Typo or Syntax:
  
  Correct any spelling mistakes or syntax errors in the type declaration.
  
  
  
  Use Correct Type Declaration:
  
  If you intended to use a custom type, ensure it is declared properly and referenced correctly (not as a predefined type).
  For custom types, use TYPES or DATA declarations appropriately.
  
  
  
  Check SAP Version and Support Packages:
  
  Some predefined types may be introduced in later versions or support packages.
  Confirm that your system supports the type you are trying to use.
  
  
  
  Debug or Trace:
  
  If the error occurs during runtime, use debugging tools to trace where the invalid type is referenced.
  Check the program or function module source code.
  
  
  
  Consult SAP Documentation:
  
  Refer to SAP help or ABAP documentation for the list of valid predefined types.
  
  
  
  
  Related Information:
  
  
  Predefined Types in ABAP:
  
  SAP ABAP has a set of predefined elementary data types such as:
  
  C (Character)
  N (Numeric text)
  I (Integer)
  P (Packed number)
  F (Floating point)
  D (Date)
  T (Time)
  X (Hexadecimal)
  
  
  
  Custom Types:
  
  User-defined types must be declared explicitly and cannot be used as predefined types.
  
  
  Error Message Class:
  
  The message class WER is related to workflow or data type errors in some SAP modules.
  
  
  
  Example:
  If your code has something like:
  DATA lv_value TYPE ZCUSTOMTYPE.
  and ZCUSTOMTYPE is not a predefined type but a custom type, you should ensure it is declared properly:
  TYPES: ZCUSTOMTYPE TYPE C LENGTH 10.
  DATA lv_value TYPE ZCUSTOMTYPE.
  Or if you mistakenly wrote:
  DATA lv_value TYPE ZCUSTOMTYPE.
  but ZCUSTOMTYPE is not defined anywhere, you will get the error.
  
  If you provide the exact context or code snippet where the error occurs, I can help you pinpoint the issue more precisely.