How do I resolve this error when upgrading to 2019 R1 - acumatica

Question

I'm upgrading an older version (6.1) to 2019 R1 (19.100.0022) and an old section of code is giving me an error that I cannot understand. Here's the relevant code - which is an attribute:
[ActiveProjectTask(typeof(EPExpenseClaimSummary.projectID), BatchModule.EP, DisplayName = "Project Task")]
[PXDefault]
public virtual int? TaskID
{
The problem is that there seems to be something wrong with the 'BatchModule.EP' parameter. Here's the error I get:
ProjectTaskAttribute does not support the given module.
Parameter name: Module
Actual value was EP.
The stack trace is as follows:
[ArgumentOutOfRangeException: ProjectTaskAttribute does not support the given module.
Parameter name: Module
Actual value was EP.]
PX.Data.PXGraph.CreateInstance(Type graphType, String prefix) +1017
PX.Web.UI.PXBaseDataSource.f(Type A_0) +560
PX.Web.UI.PXBaseDataSource.g(Type A_0) +195
PX.Web.UI.PXBaseDataSource.get_DataGraph() +396
User_PageTitle.InitAuditMenu() +591
User_PageTitle.Page_InitComplete(Object sender, EventArgs e) +71
System.EventHandler.Invoke(Object sender, EventArgs e) +0
System.Web.UI.Page.OnInitComplete(EventArgs e) +141
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2203
Does anyone know what's happening here?

Answer 1

I couldn't locate the relevant release note but I'm almost certain this is a breaking change introduced by newer versions. Only BatchModule.EA will be allowed in that context, for all practical purpose it seems to have replaced BatchModule.EP.
More concerning is EPExpenseClaimSummary which was removed so I think some refactoring will be necessary here because the module was re-implemented. You can get inspiration from the new DAC EPExpenseClaim (summary) and EPExpenseClaimDetails (details). I think the ActiveProjectTask attribute should be replaced by EPExpenseAllowProjectTask attribute (exemple in source code below).
The TaskID field has been moved from Summary to Details so you can't re-use your current logic. This means task are now assigned per detail records instead of being assigned to a single header record changing the relationship from 1-1 to 1-x. Also project was renamed to contract. The most relevant fields for you would be EPExpenseClaimDetails.ContractID and EPExpenseClaimDetails.TaskID:
#region ContractID
public abstract class contractID : PX.Data.IBqlField
{
}
/// <summary>
/// The <see cref = "Contract.ContractID"/> project or contract</see>, which should be specified if the
/// employee incurred the expenses while working on a particular project or contract.
/// You can select a project or contract only if the Project Management or Contract Management feature,
/// respectively, is enabled on the Enable/Disable Features (CS100000) form.
/// </summary>
[PXDBInt]
[PXUIField(DisplayName = "Project/Contract")]
[PXDimensionSelector(ContractAttribute.DimensionName,
typeof(Search2<Contract.contractID,
LeftJoin<EPEmployeeContract,
On<EPEmployeeContract.contractID, Equal<Contract.contractID>,
And<EPEmployeeContract.employeeID, Equal<Current2<employeeID>>>>>,
Where<Contract.isActive, Equal<True>,
And<Contract.isCompleted, Equal<False>,
And<Where<Contract.nonProject, Equal<True>,
Or2<Where<Contract.baseType, Equal<CTPRType.contract>,
And<FeatureInstalled<FeaturesSet.contractManagement>>>,
Or<Contract.baseType, Equal<CTPRType.project>,
And2<Where<Contract.visibleInEA, Equal<True>>,
And2<FeatureInstalled<FeaturesSet.projectModule>,
And2<Match<Current<AccessInfo.userName>>,
And<Where<Contract.restrictToEmployeeList, Equal<False>,
Or<EPEmployeeContract.employeeID, IsNotNull>>>>>>>>>>>>,
OrderBy<Desc<Contract.contractCD>>>),
typeof(Contract.contractCD),
typeof(Contract.contractCD),
typeof(Contract.description),
typeof(Contract.customerID),
typeof(Contract.status),
Filterable = true,
ValidComboRequired = true,
CacheGlobal = true,
DescriptionField = typeof(Contract.description))]
[ProjectDefault(BatchModule.EA, AccountType = typeof(expenseAccountID))]
public virtual int? ContractID
{
get;
set;
}
#endregion
#region TaskID
public abstract class taskID : PX.Data.IBqlField
{
}
/// <summary>
/// The <see cref="PMTask">project task</see> to which the expenses are related.
/// This box is available only if the Project Management feature is enabled on the Enable/Disable Features (CS100000) form.
/// </summary>
///
[PXDefault(typeof(Search<PMTask.taskID, Where<PMTask.projectID, Equal<Current<contractID>>, And<PMTask.isDefault, Equal<True>>>>), PersistingCheck = PXPersistingCheck.Nothing)]
[EPExpenseAllowProjectTaskAttribute(typeof(EPExpenseClaimDetails.contractID), BatchModule.EA, DisplayName = "Project Task")]
[PXUIEnabled(typeof(Where<contractID, IsNotNull, And<Selector<contractID, Contract.baseType>, Equal<CTPRType.project>>>))]
[PXFormula(typeof(Switch<Case<Where<contractID, IsNull, Or<Selector<contractID, Contract.baseType>, NotEqual<CTPRType.project>>>, Null>, taskID>))]
[PXForeignReference(typeof(Field<taskID>.IsRelatedTo<PMTask.taskID>))]
public virtual int? TaskID
{
get;
set;
}
#endregion