Generally, a product will have a finished product lot number.
At the same time, the same material may have a different lot number depending on when it was received.
Each type of material also needs a different lot number.
So in relation to the material, generally in the following way to establish the material lot number is appropriate:
Material name abbreviation + date + running number.
As a day in the resistance and capacitance of each batch, the lot number can be
DZ - resistance size - date - 01 (01 for the running number, in order to prevent the same day there are different manufacturers should be the same kind of material or the same manufacturer to send two or more a day).
Capacitors are
DR+Capacitance+Date+Arrival number.
After a batch has been produced, you will have a finished product lot number and a material lot number, both of which will be placed on the lot record sheet.
So, generally speaking, if in the same batch, there will have an impact on the product performance of the material (we call it critical material or important material or class A material) changes, should be followed by a change in the finished product lot number.
The decision to change the lot number of the finished product is determined by the characteristics of the product. It is also important to consider the cost of changing the lot number and the base number of products to be recalled in the event of a problem.
In your case:
You can change the lot number or not.
If you do, there is an additional cost associated with the additional lot number. The upside is that in the event that the finished product has a problem with a resistor from that batch, you only have to recall that batch.
No change, the production cost will become lower (a product has a variety of materials, if combined, is a scary number). But if the resistor is found to cause the product to be recalled, you recall not only the finished product with this batch of resistors, but also the related finished product batch with this batch of resistors you have to recall.
So, how to share the risk is something that should be fully evaluated.