How To Fix DO843 - Generic table type is not allowed (usages exist)

SAP Error Message - Details

• Message type: E = Error

• Message class: DO - Dictionary: Mass activation of domains and data elements

• Message number: 843

• Message text: Generic table type is not allowed (usages exist)

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 DO843 - Generic table type is not allowed (usages exist) ?

  The SAP error message DO843 ("Generic table type is not allowed (usages exist)") typically occurs when you are trying to use a generic table type in a context where it is not permitted. This can happen in various scenarios, such as when defining a data type in ABAP or when working with function modules or methods that require specific table types.
  Cause:
  
  Generic Table Type Usage: The error indicates that a generic table type (like TABLE OF ANY TYPE) is being used in a context where a specific table type is required. This can happen if you are trying to pass a generic table type to a function module or method that expects a specific structure or type.
  Existing Usages: The error message also suggests that there are existing usages of the generic table type that are causing conflicts. This could be due to the way the table type is defined or used in the program.
  
  Solution:
  
  
  Define Specific Table Types: Instead of using a generic table type, define a specific table type that corresponds to the structure you need. For example, if you need a table of a specific structure, create a new type using TYPE TABLE OF <structure>.
  TYPES: BEGIN OF ty_my_structure,
           field1 TYPE string,
           field2 TYPE i,
         END OF ty_my_structure.
  
  TYPES: tt_my_table TYPE TABLE OF ty_my_structure.
  
  
  Check Function Module/Method Signatures: Review the signatures of the function modules or methods you are calling. Ensure that you are passing the correct table types as parameters. If a specific type is required, make sure to convert or cast your generic table to the required type.
  
  
  Refactor Code: If the generic table type is being used in multiple places, consider refactoring your code to use specific types consistently. This will help avoid conflicts and make your code more maintainable.
  
  
  Check for Dependencies: If the generic table type is being used in other parts of the program or in other programs, check for dependencies and ensure that all usages are updated to use the new specific table type.
  
  
  Related Information:
  
  ABAP Data Types: Understanding the difference between generic and specific data types in ABAP is crucial. Generic types are flexible but can lead to issues when strict type checking is enforced.
  Function Module Documentation: Always refer to the documentation of the function modules or methods you are using to understand the expected parameter types.
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message, as there may be specific patches or recommendations from SAP.
  
  By following these steps, you should be able to resolve the DO843 error and ensure that your ABAP code adheres to the required type constraints.