How To Fix DT174 - Stream classes for reading and writing cannot be combined

DT174 - Overview

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 174

• Message text: Stream classes for reading and writing cannot be combined

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 DT174 - Stream classes for reading and writing cannot be combined ?

  The SAP error message DT174, which states "Stream classes for reading and writing cannot be combined," typically occurs in the context of data processing, particularly when dealing with stream classes in ABAP (Advanced Business Application Programming). This error indicates that there is a mismatch in the stream classes being used for reading and writing operations.
  
  Cause:
  The error arises when you attempt to use different stream classes for reading and writing data. In ABAP, stream classes are used to handle data streams, and they must be consistent between reading and writing operations. For example, if you are using a binary stream class for writing data, you cannot use a text stream class for reading it back.
  
  Solution:
  To resolve this error, you should ensure that the stream classes used for reading and writing are compatible. Here are some steps you can take:
  
  
  Check Stream Class Usage: Review the code where the error occurs and identify