Hello experts, kind of dumb question. I just watched a MRP training recording and wanted to confirm that is it absolutely impossible to have a fixed lead time of 3 days on work order when using WIP&RT. We have a customer uses MRP and WIP&RT. They want to setup a fixed lead time of 3 days for work order (the start and end time of the production is 3 days). While i use the work order fixed lead time field on item record to be able to give them a 3 day lead time on MRP for planned work orders, but as soon as the work order is released from MRP, it start using the routing time. Which makes sense 100%! but this customer wants a 3 day lead time period. is there any way to do it or absolutely no way to achieve with WIP&RT.

Add a routing step to the routing for planning/buffer time Make it at $0 so it doesn’t mess with your costing This will keep your planning/dates in line

Hi there, thank you so much. Just a follow up question, when it gets to a live work order from MRP workbench, isn't the production start and end time will change based on how many qty the work order is building? I think this will work for work orders with small qty, but what if a work order is building over 100 qty and the date will be adjusted and can't guarantee it always being 3 days. currently the customer is using backward scheduling method.

Yes that is why you categorize it as Setup and not Run Time. Setup will just add the 3 days regardless of quantity. If you use Run Time, then it will multiply the hours x qty of work order to dynamically calucate the dates

oh right! that's right. Thank you very muchn

no problem...happy to help

Hi there, I just tested and the outcome is working as expected. But since we still have labor run rate in routing not just labor setup time, based on the qty of the work order, the date will still change for large number work order as the run time adds on top of the setup time.

oh....yes this will happen. Wouldn't you want this to happen? i mean if there is a large work order vs a small work order it won't always be the same timeframe right?

yes, that's correct. I will need to get with the customer and get their thoughts on it. I couldn't think if they want the time frame to be the same regardless then what's the point of the routing... thank you and i really appreciated.

Haha yeah my thoughts exactly Usually this is a case of resources So for a big work order they will flex resources and put a bunch of people on it to get it done in the 3 days And if a small work order they will use less people If this is the case this is very hard to manage as NetSuite doesn’t easily allow dynamic changes to resources in routings

The work order fixed lead time that i put on item record works for assemblies without routing..but that's not what they want, they need routings

You would probably need to setup different routings per work order size in this case that matches how they fluctuate resources

understand, but now it is too late to pull back the wip and routing as they have already started using it for a while. Thank you very much for stepping in and help!

No problem