Our organization currently manufactures components across many sites/warehouses and route information is not always established for every site or part.
The part in question has no route assigned and therefore no resource requirements. My hope was that Resource Consumption would simply push the site/warehouse dimension down to all levels of the explosion (which it seems to have done) so that we would not require routes on every part at least not to start out. We have nearly 100K active released products so managing that dataset across multiple sites becomes a major challenge.
There are no references that I can identify to the "ZP" warehouse. The only potential link was the original "default order setting" but I have run another scenario that had no default order settings defaulting to that warehouse and I get the same result. The ZP warehouse is in fact linked to another site, but I cannot understand why this planned order is being linked to that warehouse at all.