Data validation and linked tables

TDC21

Board Regular
Joined
Mar 31, 2017
Messages
97
I have created a table that is associated with a linked table, I am trying to limit entries in one field to entries that are found in the linked table. Because one table is linked I cant enforce referential integrity, is there a way to use the validation rules to do this? The fields that are connected are our customer ID's, there is about 3k in total so a simple list item wont work.

Any thoughts or suggestions are greatly appreciated
 

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