A Helper/Bucket to store and search the data

ConversionDetailHelper.cs

using PX.Data;
using System.Collections.Generic;

namespace PB.Objects.B2B.Slot {

    public class ConversionDetailHelper {

        public string ConversionID { get; private set; }
        private IDictionary<ConversionKey, string> ConversionMap { get; } = new Dictionary<ConversionKey, string>();

        public ConversionDetailHelper(string conversionID) {
            this.ConversionID = conversionID;
        }

        public void Add(string organizationID, int? bAccountID, string messageType, string convertFrom, string convertTo) {
            var key = new ConversionKey(organizationID, bAccountID, messageType, convertFrom);
            if (!ConversionMap.ContainsKey(key)) {
                ConversionMap.Add(key, convertTo);
            }
        }

        public bool TryGetValue(string scheme, string organizationID, int? bAccountID, int? parentAccountID, string messageType, string convertFrom, out string convertTo) {
            scheme ??= B2ConversionScheme.Default;
            var keys = new List<ConversionKey>();
            switch (scheme) {
                case B2ConversionScheme.BAccount:
                    keys.Add(new ConversionKey(null, bAccountID, null, convertFrom));
                    keys.Add(new ConversionKey(null, parentAccountID, null, convertFrom));
                    break;
                case B2ConversionScheme.Organization:
                    keys.Add(new ConversionKey(organizationID, null, null, convertFrom));
                    break;
                case B2ConversionScheme.MessageType:
                    keys.Add(new ConversionKey(null, bAccountID, messageType, convertFrom));
                    keys.Add(new ConversionKey(null, parentAccountID, messageType, convertFrom));
                    keys.Add(new ConversionKey(null, null, messageType, convertFrom));
                    break;
                case B2ConversionScheme.Default:
                    keys.Add(new ConversionKey(organizationID, bAccountID, messageType, convertFrom));
                    keys.Add(new ConversionKey(organizationID, parentAccountID, messageType, convertFrom));
                    keys.Add(new ConversionKey(organizationID, bAccountID, null, convertFrom));
                    keys.Add(new ConversionKey(organizationID, parentAccountID, null, convertFrom));
                    keys.Add(new ConversionKey(organizationID, null, messageType, convertFrom));
                    keys.Add(new ConversionKey(organizationID, null, null, convertFrom));
                    keys.Add(new ConversionKey(null, null, null, convertFrom));
                    break;
            }
            foreach (var key in keys) {
                PXTrace.WriteVerbose($"Try to convert {ConversionID} '{convertFrom}' with scheme '{key.OrganizationID}'/{key.BAccountID}/'{key.MessageType}'"); ;
                if (ConversionMap.TryGetValue(key, out convertTo)) {
                    PXTrace.WriteVerbose($"Found {ConversionID} '{convertTo}'");
                    return true;
                }
            }
            PXTrace.WriteVerbose($"No conversion found for {ConversionID} '{convertFrom}'");
            convertTo = null;
            return false;
        }
    }
}