Message type: E = Error
Message class:  FI_E - Message Class for FM English Developers 
Message number: 580
Message text: With Funds Management active, SO line item numbers cannot exceed '99999'!
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 FI_E580 indicates that when Funds Management (FM) is active, the system has a limitation on the number of line items that can be processed in a Sales Order (SO). Specifically, the error states that the line item numbers cannot exceed '99999'. This is a common issue in SAP systems where Funds Management is implemented, as it imposes certain restrictions on the number of line items.
Cause: The error occurs because the system is trying to create or process a Sales Order with more than 99,999 line items. This limitation is due to the way SAP handles line item numbers in conjunction with Funds Management. When FM is active, the system enforces stricter controls on the number of line items to ensure proper tracking and management of funds.
Solution: To resolve this error, you can consider the following approaches: Reduce the Number of Line Items: Review the Sales Order and see if
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FI_E510 Messages were issued during the update process. Check application log.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FI_E509 &1 &2 &3 &4
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FI_E751 Current configuration to read on line item level is not recommended
What causes this issue?  The SAP customizing for the process to transfer obligation information from FM into FI using the RFFMTOBL program is set to r...
FI_E752 Function only available in transfer program RFFMTTTOBL
What causes this issue?  You have requested a function that is only available in the transfer program <DS:RE.RFFMTTTOBL>RFFMTTTOBL</>. Sin...
Click on this link to search all SAP messages.