We have not programmed DBDOC to evaluate graphical expressions in Conductor NT and PPB. The message allows you to make sure we have not missed any errors.
Scanning graphic 18_DECARBONATOR.M1 (number 1801) Only handling first tag in expression: "19_HS_2105_RMC.EB_FB2_T == 19_HS_2105_RMC.EB_FB2LS1_T". Only handling first tag in expression: "19_HS_2105_RMC.EB_FB2_T == 19_HS_2105_RMC.EB_FB2LS1_T". Only handling first tag in expression: "19_HS_2105_RMC.EB_FB2_T == 19_HS_2105_RMC.EB_FB2LS1_T".
This error can be built directly into Hyperview. For more information, see the article Building error reports into the M14.