Perform Site MRP

Explanation

This activity is used to calculate the supply and demand for material requirement planning (MRP) parts based on shop orders, customer orders, etc. The system creates MRP-planned orders for fulfilling these demands, such as purchase or shop order requisitions, and offers suggestions to plan orders for optimal manufacturing, considering material availability.

The MRP process generates supply and demand for MRP parts generated in the following IFS modules: IFS/Customer Order, IFS/Customer Schedules, IFS/Supplier Schedules, IFS/MRP (for spare parts), IFS/Project, IFS/Project Delivery, IFS/Master Scheduling, IFS/Purchasing, IFS/Maintenance, IFS/DOP, IFS/Distribution Order, and IFS/Shop Order.

Prerequisites

• BOMs must have been defined for the parts, and lead times for both the purchased and manufactured parts must have been established. MRP only uses the existing product structure with the alternate " * " indicated by an asterisk(*). 
• To perform MRP for master scheduled parts you must first have created a master production schedule using IFS/Master Scheduling.
• To perform MRP for project planned parts you should first run PMRP. 
• To perform MRP for DDMRP buffered parts must have been positioned using the planning method H, also buffer zones and buffer levels must have been established.

Note: MRP does not process parts with planning methods B - Order Point Planning, C - Replenishment Level, M - Manufacturing Cell Part or N - Next Level Demand. 

System Effects

• After this process is executed, the Warning or Error status can apply. Error indicates that some critical errors have occurred in the process, and the MRP process has stopped. Warning indicates that a message posted for this process has to be reviewed by the user. This can be done by using the View Detail right mouse button option in the Background Jobs window, which displays the message in the status information table. If the user decides to continue the MRP process, the MRP process will display error messages when the process is completed.
• MRP calculation will consider inventory parts where the MRP Control Flag check box in Inventory Part/Manufacturing tab window is selected. 
• MRP will generate shop order requisitions or non-firm production schedules for parts that must be manufactured, and it will generate purchase requisitions or supplier schedules for parts that must be purchased.
• Shop order requisitions and purchase requisitions that are not converted into shop orders or non-firm production schedules are deleted the next time you start the MRP process. MRP calculates the lowest level code of parts and updates the Low Level field on the Inventory Part/Manufacturing tab.
• For buffered parts (using planning method H, Buffered Part) MRP planned supplies are created without considering the demands that fall in future but considering open supplies, on hand quantities, demands due today, past due demands and qualified order spikes. Qualified order spikes are demands which fall within the order spike horizon and which equals or exceeds the order spike threshold.

Window

Perform Site MRP

Related Window Descriptions

Perform Site MRP

Procedure

You can execute single-site MRP either by direct execution (Procedure A) or by scheduling the task to execute as a background job (Procedure B). 

Procedure A:

1. Open the Perform Site MRP window.
2. In the Site field, enter the site for which you want to run a single-site MRP. Click List to select from the available sites. If you leave the field blank, the MRP process is run for all the sites to which you have access.
3. Select the date on which you want MRP to be executed. The current date is used by default.
4. If you want to stop the MRP process when an error occurs, you can select the Stop MRP on error check box.
5. If you do not want to create messages for phantom part dependant demands, you can select the Don't create messages for phantom part dependant demand check box.
6. If you want the MRP process to create safety stock replenishment orders by considering the MRP run date, select the Plan Safety Stock Receipt Considering MRP run Date check box. MRP calculates Wanted Receipt Date of a purchase requisition line by adding lead time (according to distribution calendar) to run date and Due Date of a shop order requisition by adding lead time (according to manufacturing calendar) to run date. If there is any event date earlier than the calculated Wanted Receipt Date or Due Date, then MRP creates safety stock on that date even this check box is selected. If it is not selected, safety stock replenishment orders will be created on the event date itself.
7. If you want use an excess of alternate components to supply the demand of the primary components, instead of creating MRP planned supply, select the Plan Alternate Component check box.
8. Select the Run Integrated with CRP check box in order to use the CRP backward scheduling logic to schedule the shop order requisitions generated from the process.
9. If the Run Integrated with CRP check box is selected, CRP backward scheduling logic will be used to schedule shop order requisitions generated from the process. As a result, the start date of the requisitions/receipts generated will be more accurate.
10. If you want to get the default values defined by the administrator in the Database Tasks window, click Default.
11. If you want to perform a selective MRP, click Selection and open Selective MRP Run Criteria dialog box. Selective MRP will enable you to run MRP for the selected set of parts from the site specified in step 2. Use this dialog box to specify the selection criteria. You can use wild card characters in these fields. If you enter multiple selection criterias, parts that fulfill all the conditions will be selected to run the selective MRP.
12. To run single site MRP, click OK.

Procedure B:

Click Schedule to open the New Database Task Schedule window. Set the required scheduling parameters and save. Scheduled tasks can be seen in the Scheduled Database Tasks window