3188176 - Issues when when importing Requisition from external system using web service

Scenario 1 (NullPointerException):

Import Requisition web service data import task is not completing and below error is displayed under Data Import/Export > Web Service Status > Import Requisition:

ERROR when firing the trigger 'IntegrationPostLoad' on Object 'ariba.purchasing.core.Requisition': java.lang.NullPointerException: Cannot invoke "ariba.base.fields.FieldPropertiesSource.getFieldsInGroup(String)" because "fps" is null.

'ariba.purchasing.core.Requisition': java.lang.NullPointerException
at ariba.base.fields.FieldProperties.getFieldsInGroup(FieldProperties.java:2227)
at ariba.basic.core.HierarchyPathUtil.getHierarchyParentField(HierarchyPathUtil.java:128)
at ariba.basic.core.HierarchyPathUtil.getAncestors(HierarchyPathUtil.java:179)
at ariba.purchasing.core.AggregationUtil.getAllParentCommodityCodes(AggregationUtil.java:1034)
at ariba.purchasing.core.AggregationUtil.getRuleObjectValueSource(AggregationUtil.java:972)
at ariba.purchasing.core.DemandHoldingEngine.isHeldLineItem(DemandHoldingEngine.java:67)
at ariba.purchasing.core.DemandAggRuleProcessor.checkWhetherRLIShouldBeHeld(DemandAggRuleProcessor.java:173)
at ariba.purchasing.core.DemandAggRuleProcessor.processRules(DemandAggRuleProcessor.java:63)
at ariba.purchasing.core.Requisition.checkSubmit(Requisition.java:5170)
at ariba.purchasing.core.PurchasingUtil.validateWithNotify(PurchasingUtil.java:1341)

Scenario 2 (Field values are not defaulting during requisition import):

Material Group (Partition Commodity Code) is not populating on the requisition after performing the Import Requisition task.

Import requisition error fps NullPointerException commoditycode commodity commodity code material group commoncommoditycode , KBA , BNS-ARI-PUR-REQ-IEX , Requisition Import/Export , BNS-ARI-PUR-REQ , Requisitioning , How To