Creo Expert Moldbase Extension > Options > Component Options > ENABLE_NON_CATALOG_PLATES
  
ENABLE_NON_CATALOG_PLATES
NO: Automatically set plates to P-plates if length, width, or thickness does not match catalog data.
YES: Do not set plates to P-plates even if plate length, plate width, or plate thickness does not match catalog data. Ordering numbers may be incorrect.
Default: NO.