How To Fix TPDA221 - Internal error: Inconsistent subscreen stack (&1 / &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: TPDA - Debugger

• Message number: 221

• Message text: Internal error: Inconsistent subscreen stack (&1 / &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.

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 TPDA221 - Internal error: Inconsistent subscreen stack (&1 / &2) ?

  The SAP error message TPDA221, which states "Internal error: Inconsistent subscreen stack (&1 / &2)," typically indicates an issue with the subscreen stack in the SAP GUI. This error can occur in various scenarios, often related to the navigation or display of screens within a transaction.
  Cause:
  
  Inconsistent Subscreen Stack: The error suggests that there is a mismatch or inconsistency in the subscreen stack. This can happen if the application is trying to display a subscreen that is not properly initialized or if there are issues with the screen flow logic.
  Custom Development: If there are custom screens or enhancements in the transaction, they may not be handling the subscreen stack correctly.
  SAP Notes: Sometimes, this error can be related to known issues that have been documented in SAP Notes, which may require a patch or update.
  
  Solution:
  
  Check for SAP Notes: Look for any relevant SAP Notes that address this specific error. You can search the SAP Support Portal for TPDA221 or related keywords.
  Debugging: If you have access to the development environment, you can debug the transaction to identify where the inconsistency is occurring. Look for any custom code that manipulates the subscreen stack.
  Transaction Reset: Sometimes, simply exiting the transaction and re-entering can resolve temporary inconsistencies.
  Clear Cache: Clear the SAP GUI cache. This can sometimes resolve display issues that lead to errors.
  Review Custom Code: If there are custom enhancements or modifications, review the code to ensure that it correctly manages the subscreen stack.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes, so identifying the specific transaction can help narrow down the issue.
  SAP GUI Version: Ensure that you are using a compatible version of the SAP GUI, as older versions may have bugs that have been fixed in newer releases.
  System Logs: Check the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to diagnose and potentially resolve the TPDA221 error in your SAP environment.