Message type: E = Error
Message class:  FKK_ID_XX_SAFT - SAFT message 
Message number: 008
Message text: Lower limit of Origin Key is greater than upper limit
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 FKK_ID_XX_SAFT008 indicates that there is an issue with the configuration of the Origin Key in the context of the SAP Convergent Charging or SAP Convergent Invoicing modules. Specifically, this error occurs when the lower limit of the Origin Key is greater than the upper limit, which is logically inconsistent.
Cause: Configuration Error: The most common cause of this error is a misconfiguration in the settings for the Origin Key. This could happen if the values for the lower and upper limits were incorrectly entered or modified. Data Entry Mistake: During the setup or modification of the Origin Key, a user may have inadvertently swapped the values or entered them incorrectly. System Migration Issues: If the system has undergone a migration or upgrade, there may be inconsistencies in the data that lead to this error.
Solution: Check Configuration: Navigate to the configuration settings for the Origin Key in the relevant module (e.g., SAP
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FKK_ID_XX_SAFT007 Lower limit of Document Type is greater than upper limit
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKK_ID_XX_SAFT006 Enter a value in the field 'Origin Key From'
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKK_ID_XX_SAFT009 Combination doc.type/origin key &1/&2 already used (first conflict only)
What causes this issue?  You have tried to create a new extraction rule using the same combination of document types and origin keys  for the same pos...
FKK_ID_XX_SAFT010 From date must be the first day in the month
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.