This DTP processing message occurs when a textbox resizing macro function tries to set the bottom position of a textbox at a value smaller than that of the top of that same box.
To avoid the occurrence of this message, make sure that you use textbox modification macro functions such as SetBoxVert and MoveBoxVert which guarantee that the separation between top and bottom remains the same throughout the resizing process.
Topic 181645, last updated on 02-Sep-2020