Create a Rollup Summary field on the Opportunity object that COUNTS the number of Product objects attached to the Opportunity, then add a VR that throws an error if your RS Field > 1
Create a Rollup Summary field on the Opportunity object that COUNTS the number of Product objects attached to the Opportunity, then add a VR that throws an error if your RS Field > 1
Create a Rollup Summary field on the Opportunity object that COUNTS the number of Product objects attached to the Opportunity, then add a VR that throws an error if your RS Field > 1
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Create a Rollup Summary field on the Opportunity object that COUNTS the number of Product objects attached to the Opportunity, then add a VR that throws an error if your RS Field > 1
Thank you so much..
No problem, you owe me a beer
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