Message type: E = Error
Message class:  SLEI_DEF_MSG - Message class for LEI design time linkages 
Message number: 109
Message text: Design linkage is not allowed to transport from customizing mode
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The SAP error message SLEI_DEF_MSG109 indicates that there is an issue with transporting design linkages from customizing mode. This typically occurs when you attempt to transport certain objects or configurations that are not allowed to be transported due to their nature or the current system settings.
Cause: The error is generally caused by one of the following reasons: Customizing Mode Restrictions: The design linkages you are trying to transport are in customizing mode, which is not permitted for transport. Customizing settings are often meant to be client-specific and are not intended to be transported across systems. Transport Layer Settings: The transport layer settings may not allow certain objects to be transported, especially if they are linked to client-specific configurations. Object Type Restrictions: Certain object types or configurations may have restrictions on transportability due to their dependencies or the way they are defined in the system.
Solution: To resolve this error, you can consider the following steps: Check Customizing
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