How To Fix SLEI_GEN019 - Existing facade class &1 does not implement the facade interface &2

SLEI_GEN019 - Overview

• Message type: E = Error

• Message class: SLEI_GEN - Message Texts for Business Event Facade Generation

• Message number: 019

• Message text: Existing facade class &1 does not implement the facade interface &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SLEI_GEN019 - Existing facade class &1 does not implement the facade interface &2 ?

  The SAP error message SLEI_GEN019 indicates that there is a mismatch between a facade class and its corresponding facade interface. Specifically, the error states that the existing facade class (denoted as &1) does not implement the required facade interface (denoted as &2). This typically occurs in the context of SAP's Enterprise Services or when working with SAP's Service Layer.
  
  Cause:
  
  Implementation Issue: The facade class is expected to implement certain methods defined in the facade interface, but it does not. This could be due to an incomplete implementation or a missing class.
  Version Mismatch: There may be a version mismatch between the facade class and the interface it is supposed to implement. If the interface has been updated but the class has not, this error can occur.
  Configuration Error: The configuration settings in the SAP system may not be correctly pointing to the right facade class or interface.
  Development Error: If custom development has been