How To Fix FDT_EXPRESSIONS172 - Node &1 is unreachable in first match mode

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 172

• Message text: Node &1 is unreachable in first match mode

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 FDT_EXPRESSIONS172 - Node &1 is unreachable in first match mode ?

  The SAP error message FDT_EXPRESSIONS172 indicates that a node in a decision table or expression is unreachable when the system is trying to evaluate it in "first match mode." This typically occurs in the context of SAP's Flexible Decision Table (FDT) framework, which is used for decision-making processes in various applications.
  
  Cause:
  The error occurs when:
  
  Node Configuration: The node specified (Node &1) is not reachable due to the configuration of the decision table. This could be due to incorrect conditions or paths that lead to that node.
  First Match Mode: In first match mode, the system evaluates the nodes in a specific order and stops at the first match it finds. If the node is unreachable, it means that the conditions leading to that node are not satisfied by any of the preceding nodes.
  Logical Errors: There may be logical errors in the decision table that prevent the evaluation from reaching the specified node.
  
  
  Solution:
  To