How To Fix SB389 - You can only concatenate modifiable lines

SB389 - Overview

• Message type: E = Error

• Message class: SB - Version Management Messages

• Message number: 389

• Message text: You can only concatenate modifiable lines

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 SB389 - You can only concatenate modifiable lines ?

  The SAP error message SB389, "You can only concatenate modifiable lines," typically occurs in the context of ABAP programming when you are trying to concatenate strings or lines that are not modifiable. This can happen in various scenarios, such as when working with internal tables or string variables that are declared as constants or are not allowed to be modified.
  
  Cause:
  
  Immutable Data: You are attempting to concatenate a line or string that is declared as a constant or is part of a structure that is not modifiable.
  Read-Only Context: The context in which you are trying to perform the concatenation does not allow modifications, such as within certain types of loops or when dealing with specific data types.
  Incorrect Data Types: The data types of the variables you are trying to concatenate may not be compatible or may not allow for concatenation.
  
  
  Solution:
  
  
  Check Variable Declaration: Ensure that the variables or lines you are trying