L2 Sign client serviceSalesdepartment Salesdepartmentemployee Sales department employee Send offer to client Create offer for client Send contract to client Create updated offer Offer Receive change requests Receive offer agreement Request contract from legal department Receive contractWere approved Notify client about offer cancellation Receive clients offer request Review change request Headofsales Head of sales Review offer Create change requests Offer review failed Offer review is based on its potential value to the company. Change requests are reviewed based on their cost and possibility from the company Client Client Client wants to be added to service Request offer from our service Review offer Was satisified Sign the contract Client signed Create change requests Offer received Send change requests Client not signed Send offer agreement Receive contract Offer cancellation received Wait for response Legal department Client can approach the company with the request for an offer. Sales department employee then creates an offer for that client and the offer is reviewed by the sales department manager. Based on his feedback there are some changes to the offer or the offer is sent to the client. He then agrees or sends change requests for the offer. If the change requests requested by the client or the management are not possible client is notified about offer cancellation. Otherwise update offer is created. Once an final offer is agreed upon the sales department asks the legal department for contract and then the contract is signed. No Yes No Sendofferrequest Yes Missing start event -1 Missing end event -1 It would be probably enough to model just company part. Result: 10