Message type: E = Error
Message class:  HRGB_GBRTI - Messages for RTI 
Message number: 104
Message text: Invalid ECON
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 HRGB_GBRTI104 "Invalid ECON" typically relates to issues in the configuration or processing of employee data, particularly in the context of payroll or HR processes. The "ECON" usually refers to an economic code or a specific classification that is expected in the system but is either missing or incorrect.
Cause: Invalid Economic Code: The economic code (ECON) being referenced in the payroll or HR process is not valid or does not exist in the system.
Configuration Issues: There may be a misconfiguration in the payroll settings or in the employee master data that leads to the system not recognizing the ECON. Data Entry Errors: Manual entry errors in employee records or payroll data can lead to invalid codes being referenced. Missing Customization: If the system has been customized, there may be missing or incorrect custom settings related to economic codes.
Solution: Check the ECON: Verify the economic code being used in the transaction. Ensure
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
HRGB_GBRTI103 Invalid SCON &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRGB_GBRTI102 Niable pay Year to date is not in valid range 0 to &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRGB_GBRTI105 Period Of Inactive is present then YTD or Declaration should be present
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
HRGB_GBRTI106 Date less than start date of tax year
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.