Long lead-time items are parts with a long delivery time that need to be ordered, but of which you do not yet know the production file in which they will be used. This prevents a regular order to be created in Isah, but often there is no time to wait for the production file. To solve this problem, Isah provides the option of ordering these long lead-time items under a special production order for long lead-time items.
The basis is a sales order containing a sales line. The product included on this sales line is a product your own company produces. Its calculation can have more than one level. For instance, semi-finished articles could themselves consist of semi-finished articles, etcetera. Long lead-time items required somewhere in this structure must often be ordered even before the production structure is known. In order to register these items, you could first create an additional sales line with a dummy part you have created specifically for purchasing long lead-time items. Set the origin of this line to 'Production'. Isah will create a production file for the dummy part.
In the production file, select the Long lead-time items check box on the Continued tab. The file will now be regarded as a special file, and an alert will be displayed when you are about to receive the part ordered. This is important, because you cannot receive the long lead-time item against the newly created file, otherwise the costs would not be distributed properly.
Then, on the Production calculation for parts form, create a line on which you enter the long lead-time item. You can add multiple lines in order to purchase all long lead-time items for a particular order at the same time. Once you have marked the file as a file for long lead-time items, all underlying part lines will also automatically be marked as such (Continued tab).
After you have authorized the part line, you can purchase the part.
Eventually, the long lead-time item will be received. It is important that you do not register the receipt against the dummy calculation line, as this would result in an incorrect costs distribution. Before you register the receipt of the part, you need to move it to the production file for which you purchased it. In doing this, the entire part calculation line is moved: it is deleted at the old location and added at the new location. Therefore, the line may not exist in the target file yet.
After you have moved the long lead-time item to the correct location, you can register its receipt according to the standard procedure.
Note: If you register the receipt of the long lead-time item against the production file for long lead-time items, the long lead-time item can no longer be moved to the actual production file.
Note: If, in a production file, you create a part calculation line for the long lead-time item you have already purchased, the long lead-time item will still be displayed on the purchase requirement. As the long lead-time item was purchased under a different file, a requirement will be detected for the new production file. You are therefore recommended to keep a list of the long lead-time items already purchased, to prevent duplicate orders. The recommended procedure is to move the line containing the long lead-time item from the dummy file to the correct file at the time that the actual calculation is created. This will prevent duplicate orders, and will prevent you from accidentally registering the part receipt on the dummy line.