manageSourcingRule API not working for Create-Modify YFC0009 Update failed error

Symptom

PART: API-OM 5.5 Platform
PRODUCT: Distributed Order Management
COMPONENT: manageSourcingRule
OS: HP-UX - 11i
DATABASE: Oracle - 9.2.0.4
WEB SERVER: WebLogic - 8.1 SP1
WEB BROWSER: Internet Explorer - 6.0 sp1

Using the following input XML to manageSourcingRule throws the error as shown below:

<SourcingRuleHeader FulfillmentType="PRODUCT_SOURCING" ItemGroupCode="PROD" Purpose="SOURCING" OrganizationCode="DEFAULT" SellerOrganizationCode="DEFAULT" ToNodeKey="SRG-Cal">
<SourcingRuleDetails Reset="Y">
<SourcingRuleDetail DistributionRuleId= "" FromNodeKey="SRG-Min" Operation="Create-Modify" ProcureToShipAllowed="Y" SeqNo="1">
</SourcingRuleDetail>
</SourcingRuleDetails>
</SourcingRuleHeader>


- <Errors>
- <Error ErrorCode="YFC0009" ErrorDescription="Update failed. The record to be updated could either not be found or it was already deleted or updated by another transaction." ErrorRelatedMoreInfo="">
<Attribute Name="ErrorCode" Value="YFC0009" />
<Attribute Name="ErrorDescription" Value="Update failed. The record to be updated could either not be found or it was already deleted or updated by another transaction." />
<Attribute Name="ErrorRelatedMoreInfo" Value="" />
<Attribute Name="Operation" Value="Create-Modify" />
<Attribute Name="Entity" Value="SourcingRuleHeader" />
<Stack>com.yantra.yfc.util.YFCException at com.yantra.yfc.dblayer.YFCEntity.setDBAction(YFCEntity.java:312) at com.yantra.shared.dbclasses.YFS_Sourcing_Rule_DetailBase.setAttributes(YFS_Sourc ing_Rule_DetailBase.java:529) at com.yantra.shared.dbclasses.YFS_Sourcing_Rule_DetailBase.equals(YFS_Sourcing_Rul e_DetailBase.java:601) at