<?xml version="1.0" encoding="UTF-8"?> 
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<ValidationRule xmlns="http://soap.sforce.com/2006/04/metadata"> 
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    <fullName>Rental_Apply_Cannot_Modify_Model</fullName> 
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    <active>true</active> 
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    <errorConditionFormula>NOT(ISBLANK(Rental_Apply_Equipment_Set_Detail__c)) && RepairSource__c = '备品修理' &&  
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Ischanged(Delivered_Product__c)</errorConditionFormula> 
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    <errorDisplayField>Delivered_Product__c</errorDisplayField> 
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    <errorMessage>有关联的借出一览明细,不能修改设备型号。</errorMessage> 
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</ValidationRule> 
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