Message type: E = Error
Message class:  CA_TTE - TTE Messages 
Message number: 490
Message text: Header command &1 is invalid
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
From the CRM order: Contact system administrator
From the Simulation Tool:
Go to the Input Document and choose the Header.
Use the F4 help for TTE Command to choose a valid command.
Save your entries.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CA_TTE490, which states "Header command &1 is invalid," typically occurs in the context of SAP's Transport Management System (TMS) or when dealing with transport requests. This error indicates that there is an issue with the header command specified in a transport request or a related configuration.
Cause: Invalid Command: The header command specified in the transport request is not recognized by the system. This could be due to a typo or an unsupported command.
Configuration Issues: There may be issues with the configuration of the transport system or the transport directory. Transport Request Corruption: The transport request itself may be corrupted or improperly formatted. Version Compatibility: The command may not be compatible with the version of SAP you are using.
Solution: Check the Command: Verify the header command specified in the transport request. Ensure that it is correctly spelled and is a valid command recognized by SAP. Review Transport Request: Open the transport request
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