This could be the result of an incorrect pur qty being set on the item.
ITEM NOT SHOWING ON SUGGESTED ORDER
If this is a supplier based order, check that the supplier number is set on the item. If not, you can add a supplier en mass to a category via the Purchasing > 1. Data Maintenance > 6. Set Default Supplier Code option
ITEM IS NOT PRICING PROPERLY
First thing to check would be the pricing parameters, and the discount level on the item
Next, you may want to look at the qty per on the item
ERROR 23 SHOWS WHEN RUNNING REPORT ON CATEGORY
You will want to run a Inventory > 1. Data Maintenance > 5. Utilities > 1. Category Resequence routine on the category. Suggestion is to use ‘C’ for chaining.