Message type: E = Error
Message class:  FKK_ID_PT_SIGN - Digital Signature Portugal FI-CA/IS 
Message number: 606
Message text: Cannot print doc; expected waiting time to print immediately too high
The printing program uses parameters to generate and to read digital
signature data that will exceed an acceptable waiting time to determine
the data to be printed immediately. The process may result in a useless
processing time, in a user abort of the processing, or in one or
multiple useless retriggers of the print program by the user.
The system does not trigger the digital signature generation.
Contact your system adminiatrator to adjust the print program.
Adjust your coding and/or the parameter values used in your printing
program.
You have the following options:
Decrease the expected idle time (waiting time without any processing),
or
Decrease the number of maximum document lines to be processed, or
Use recursive coding during the exception handling to reprocess the
print data determination.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FKK_ID_PT_SIGN606 indicates that there is an issue with printing a document due to an excessively long expected waiting time for the print job to be processed. This can occur in various scenarios, particularly in financial or billing contexts where documents need to be printed. Causes: Printer
Configuration Issues: The printer may not be properly configured in the SAP system, or it may not be connected or available. High Print Queue: The printer may have a long queue of print jobs, causing delays in processing your document. Network Issues: If the printer is networked, there may be connectivity issues affecting the ability to send print jobs. System Performance: The SAP system may be experiencing performance issues, leading to delays in processing print requests. Document Size: The document being printed may be too large or complex, causing longer processing times. Solutions: Check Printer Status: Ensure that the printer is online, properly configured, and has no errors
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