How To Fix WFF_FORM_SERVER201 - IF_WFF_FORM_SERVER_OBJECT: Invalid Class (&)

SAP Error Message - Details

• Message type: E = Error

• Message class: WFF_FORM_SERVER - Web Financials Forms: Form Server

• Message number: 201

• Message text: IF_WFF_FORM_SERVER_OBJECT: Invalid Class (&)

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 WFF_FORM_SERVER201 - IF_WFF_FORM_SERVER_OBJECT: Invalid Class (&) ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WFF_FORM_SERVER201 IF_WFF_FORM_SERVER_OBJECT: Invalid Class (&)
  
  
  Cause:
  This error occurs in the SAP Workflow framework when the system tries to instantiate or reference a class that is either:
  
  Not existing in the system,
  Not active,
  Not properly implemented,
  Or the class name passed to the workflow container or method is incorrect or empty.
  
  The placeholder (&) in the message usually contains the name of the invalid or missing class.
  In particular, this error is raised by the interface IF_WFF_FORM_SERVER_OBJECT which is used in the context of workflow form processing or form server objects.
  
  When does it occur?
  
  When a workflow step tries to call a form server object (class) that is not available.
  When the class name is dynamically determined and the value is wrong or missing.
  When a custom workflow or form server object is incorrectly configured or not transported properly.
  During workflow execution involving form processing or form server calls.
  
  
  
  Solution:
  
  
  Check the