Added usings most likely necessary for testing.
Fixed Bug in CompanyUserFetch where invalid not supplying a key would give results.

Fixed a bug where Company was not being compared correctly.
Changed CompanyUsersSuppliersExist so that it returns error if data does not have appropriate error.

Did a check in CompanySupplierFetch for invalid company key.
Implemented Tests for PriceListFetch

Implemented Tests for CompanyUserSuppliers
Added Mock Data in Repository Factory.
Added Tasks for Tests.
Bug Fix where CompanySupplierFetch would incorrectly compare companies.

Fixed a bug where deletion could cause a bug.
Fixed a but where invalid price agreements would could be returned.
Fixed data types where certain data was using the wrong type for handling data. Place where the types
Test Augmentations.
Added a condition to catch null references too update.

Added a condition to catch Descriptions that were null in SupplierCreate.