Updating values in a specific table column, and specified row

I have a table where left-most column holds a unique ID for each row.
To the right of the uniqueID column, I have several columns with attributes for each ID:

|UNIQUEID|FAMILY|VOLUME|TARGET_COMPLETION_DATE|ACTUAL_COMPLETION_DATE|
|ProdA |Widget|2,000 | 3/4/2017 | 2/17/2017 |
|ProdB |Carrots| 300 | 5/5/2017 | -blank- |
|ProdC |Towels| 770 | 12/22/2017 | -blank- |



I use this master table to track completion %, and summarize progress according to attributes (using SUMIFS(...) and such) in a separate reporting sheet.

Others send me updates listing the subset of ID's which have changed status in one of the columns. This update sheet will list the new value to be loaded for the UniqueID and Column they wish to update.

For example, I'd get something like this:

|UNIQUEID|ACTUAL_COMPLETION_DATE|
|ProdB | 9/21/2017|


Is there an easy way to reliably load these new cell values according to only the rows of the stated UniqueIDs and the referenced column name?
All the columns I accept value updates are loaded with values (not formulas).

Thank You!