diff -r 922c6e6a8d3e -r e351169bf3a5 src/ai/api/ai_error.hpp.sq
--- a/src/ai/api/ai_error.hpp.sq	Mon Apr 07 18:32:42 2008 +0000
+++ b/src/ai/api/ai_error.hpp.sq	Mon Apr 07 18:37:23 2008 +0000
@@ -61,6 +61,7 @@
 	AIError::RegisterErrorMap(STR_1008_MUST_REMOVE_RAILROAD_TRACK,      AIError::ERR_AREA_NOT_CLEAR);
 	AIError::RegisterErrorMap(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST,      AIError::ERR_AREA_NOT_CLEAR);
 	AIError::RegisterErrorMap(STR_5006_MUST_DEMOLISH_TUNNEL_FIRST,      AIError::ERR_AREA_NOT_CLEAR);
+	AIError::RegisterErrorMap(STR_1002_EXCAVATION_WOULD_DAMAGE,         AIError::ERR_AREA_NOT_CLEAR);
 	AIError::RegisterErrorMap(STR_1024_AREA_IS_OWNED_BY_ANOTHER,        AIError::ERR_AREA_IS_OWNED_BY_ANOTHER_COMPANY);
 	AIError::RegisterErrorMap(STR_NAME_MUST_BE_UNIQUE,                  AIError::ERR_NAME_IS_NOT_UNIQUE);
 	AIError::RegisterErrorMap(STR_0007_FLAT_LAND_REQUIRED,              AIError::ERR_FLAT_LAND_REQUIRED);