# Solver Warnings and Hints

After the completion of a calculation, messages and hints may appear. It is good practice to check the contents of this list after each calculation. In the example shown below, there are 3 warnings associated with 3 separate pumps. Load up the file "[FluidFlow3 folder]\QA Incompressible Flow\Boosters\Booster Warnings.ff3" if you wish to view this in association with the flowsheet. As you click on each list entry a more detailed description is shown and because the flowsheet is synchronized with the data palette the referred component is also selected in the flowsheet. There are three main types of messages, each type is distinguished by the icon that appears to the left of the text within the list. Warnings and hints are shown in the list above and are associated with the hazard icon. Build Errors stop the calculation proceeding and so these are associated with a stop icon. Occasionally you may see a calculation error message, this also has a stop icon association. If you see this type of message it means that a calculation error has occurred OR that the network has not converged to a solution. Please feel free to contact support@fluidflowinfo.com if you experience this type of message. The most common reason for this class of message is that the network failed to converge. Convergence failures can occur for many reasons.