How To Fix WS019 - SDoc types of cat. '&' and '&' cannot be processed with this transaction

WS019 - Overview

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 019

• Message text: SDoc types of cat. '&' and '&' cannot be processed with this transaction

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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WS019 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WS019 - SDoc types of cat. '&' and '&' cannot be processed with this transaction
  
  
  Cause:
  This error occurs when you try to process or handle two different Service Document (SDoc) types belonging to different categories in a single transaction or processing step. SAP categorizes SDoc types (such as IDocs, BAPIs, or other service documents) into different categories, and certain transactions or functions are designed to process only one category at a time.
  For example, you might be trying to process an SDoc of category 'A' together with another SDoc of category 'B' in a transaction that only supports processing SDocs of a single category.
  
  Explanation:
  
  SDoc types are classified into categories (e.g., inbound, outbound, synchronous, asynchronous).
  The transaction or function you are using expects SDocs of the same category.
  Mixing SDocs of different categories in one operation is not supported, hence the error.
  
  
  
  Solution:
  
  
  Check the SDoc