Message type: E = Error
Message class:  FINS_FIS_UHIER - Universal Hierarchy Message Class 
Message number: 123
Message text: Fixed node &1 is not defined in the header of the hierarchy
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.
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.
The SAP error message FINS_FIS_UHIER123 indicates that a fixed node in a hierarchy is not defined in the header of that hierarchy. This typically occurs in the context of financial reporting or when working with hierarchical structures in SAP, such as cost centers, profit centers, or other organizational units.
Cause: Missing Definition: The fixed node specified in the error message is not defined in the hierarchy header. This could happen if the hierarchy was modified, and the fixed node was removed or not properly configured. Incorrect Hierarchy Assignment: The hierarchy being used may not be correctly assigned to the relevant financial object or reporting structure. Data Inconsistency: There may be inconsistencies in the data, such as missing entries or incorrect configurations in the hierarchy setup.
Solution: Check Hierarchy Configuration: Go to the hierarchy maintenance transaction (e.g., KSH1 for cost center hierarchy). Verify that the fixed node mentioned in the error message is indeed defined in the hierarchy header. If
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FINS_FIS_UHIER122 Parent &1 of node &2 not found in FAGL_011PC
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FINS_FIS_UHIER121 Illegal range assigned to node &1; from acct &2 is > to acct &3
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FINS_FIS_UHIER124 Fixed node &1 in header not found in hiearchy
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FINS_FIS_UHIER125 Header contains fixed nodes that point to the same FS item
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.