Click to edit title Click to edit sub-title Task Force API Accounting Process Implementation SOMA document validation process V1.0,

9:01, Send TSO_A-SOMA V1 TSO A TSO B Internal data collec- tion and validation Data available 9:02, neg. ACK, Data not yet available Assemble SOMA Validate SOMA => but no data 9:20, Send TSO_B-SOMA V1 9:2x, pos. ACK on TSO_B-SOMA V1 Wait for TSO B - Validate SOMA => Everything OK - Prepare SOMA V2 9:2x, Send TSO_A-SOMA V2 (content = TSO_A-SOMA V1) - Validate SOMA => Everything OK TSO_B-SOMA done TSO_A-SOMA done 9:3x, pos. ACK on TSO_A-SOMA V2 Note: The used times are only for illustration purposed Internal data collec- tion and validation Possible SOMA validation process «good case» 9:19 9:00

9:01, Send TSO_A-SOMA V1 TSO A TSO B Internal data collec- tion and validation Data available 9:02, neg. ACK, Data not yet available Assemble SOMA Validate SOMA => but no data 9:20, Send TSO_B-SOMA V1 9:2x, pos. ACK on TSO_B-SOMA V1 Wait for TSO B - Validate SOMA => Everything OK - Prepare SOMA V2 9:2x, Send TSO_A-SOMA V2 (content = TSO_A-SOMA V1) 9:2x+, neg. ACK, Data outside tolerance - Validate SOMA => Outside tolerance - Analyse problem - ev. call TSO B - ev. adjust data - Prepare SOMA V3 TSO_B-SOMA done Discuss problem 9:30, Send TSO_A-SOMA V3 Phone call - Validate SOMA => Everything OK TSO_A-SOMA done 9:3x, pos. ACK on TSO_A-SOMA V3 Note: The used times are only for illustration purposed Internal data collec- tion and validation Possible SOMA validation process «bad case» 9:19 9:00