ERR_STRING_TOKEN = 'Bad string token: [%s].'\r
ERR_MACRO_TOKEN = 'Bad macro token: [%s].'\r
ERR_EMPTY_TOKEN = 'Empty token is not allowed.'\r
-ERR_PCD_RESOLVE = 'PCD token cannot be resolved: [%s].'\r
+ERR_PCD_RESOLVE = 'The PCD should be FeatureFlag type or FixedAtBuild type: [%s].'\r
ERR_VALID_TOKEN = 'No more valid token found from rest of string: [%s].'\r
ERR_EXPR_TYPE = 'Different types found in expression.'\r
ERR_OPERATOR_UNSUPPORT = 'Unsupported operator: [%s]'\r