How To Fix 88402 - Check the field type: &1 in &2 is not a material number field

SAP Error Message - Details

• Message type: E = Error

• Message class: 88 - REA Processing

• Message number: 402

• Message text: Check the field type: &1 in &2 is not a material number field

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 88402 - Check the field type: &1 in &2 is not a material number field ?

  The SAP error message 88402, which states "Check the field type: &1 in &2 is not a material number field," typically occurs when there is an attempt to use a field that is expected to contain a material number, but the field type does not match the expected format for a material number.
  Cause:
  
  Field Type Mismatch: The field in question is not defined as a material number field in the database or in the program logic. This could happen if the field is incorrectly configured in the data dictionary (DDIC) or if the wrong field is being referenced in the code.
  Data Entry Error: If a user is trying to enter a material number in a field that is not designated for material numbers, this error can occur.
  Custom Development Issues: If there are custom programs or enhancements that manipulate material numbers, they may not be correctly handling the field types.
  
  Solution:
  
  Check Field Definition: Verify the field definitions in the data dictionary (transaction SE11). Ensure that the field is defined as a material number field (typically of type MATNR).
  Review Program Logic: If the error occurs in a custom program, review the code to ensure that the correct fields are being used and that they are compatible with material number formats.
  Data Validation: Ensure that the data being entered or processed is valid and conforms to the expected format for material numbers.
  Debugging: If the issue persists, use the debugger (transaction SE80 or SE37) to trace the program execution and identify where the incorrect field is being referenced.
  Consult Documentation: Check SAP notes or documentation for any known issues related to this error message, as there may be specific patches or updates that address the problem.
  
  Related Information:
  
  Material Number Format: In SAP, material numbers are typically alphanumeric and can have a specific length (usually 18 characters). Ensure that any input adheres to this format.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) for debugging and checking field definitions.
  SAP Notes: Search the SAP Support Portal for notes related to error message 88402 for any specific fixes or recommendations from SAP.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.