Is there a mapping between the service code and GL account? Upon checking there is a table that provides the Service Entry Sheet and GL account (Table ESKN where Service Entry Sheet Number = ESKN-PACKNO).
Also, is there a standard tcode that contains the following information found in corresponding tables:
1. Service Entry Sheet Number (ESSR-LBLNI)
2. Activity Number (ESSL-SRVPOS)
3. GL Account (ESKN-SAKTO) - Service Entry Sheet = ESKN-PACKNO