Message type: E = Error
Message class:  UA_SM1 - Structure Maintenance 
Message number: 026
Message text: No formulas were created yet
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 UA_SM1026 "No formulas were created yet" typically occurs in the context of SAP's Product Lifecycle Management (PLM) or similar modules where formulas or recipes are expected to be defined for a product or material. This error indicates that the system is unable to find any formulas associated with the specified material or product.
Cause: No Formulas Defined: The most straightforward cause is that no formulas have been created for the material or product in question. Incorrect Material/Recipe Reference: The material or recipe being referenced may not be correctly set up or may not exist in the system. Authorization Issues: The user may not have the necessary permissions to view or create formulas.
Configuration Issues: There may be configuration settings in the system that prevent formulas from being created or displayed.
Solution: Create Formulas: If no formulas exist, you will need to create them. This can typically be done through the relevant transaction codes
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
UA_SM1025 &1 (split), time '&2'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UA_SM1024 &1, time '&2'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UA_SM1027 Function is not available for this type
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
UA_SM1028 Formula for type &1/column &2 for time &3 already exists
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.