Workflow Orchestration for Laboratory Hazardous Chemical Purchasing and Records: Trace Exceptions and Review Results

Lab Chemicals: review workflows for exception review. Compare the source records, required inputs and downstream results before handing the task over.

What this category's data looks like

What this category's data looks like: Laboratory hazardous chemical procurement and ledger materials include three types: hazardous chemical procurement applications, usage registration, and inventory ledgers. Procurement applications record the product name, specification, quantity, application date, and approval signature; usage registration records the user, usage date, actual issued quantity, and receipt signature; inventory ledgers record the balance quantity, inbound and outbound dates, and custodian signature. The three types of materials come from different sources and have different update rhythms: procurement applications are generated with purchase request batches, usage registration is filled in per instance, and inventory ledgers are updated daily or per batch. In terms of field characteristics, name, quantity, date, and signature are common verification items. When entering workflow orchestration, procurement applications serve as the baseline for exception comparison, usage registration serves as evidence on the consumption side, and inventory ledgers serve as evidence on the balance side; each of the three plays its own role as source material for subsequent nodes to trace and review by branch.

Configuration and implementation checks

Configuration and implementation checks: This step is executed by workflow nodes (user selection and branches), outputting branch directions and interaction status records. The "exception list and review conclusion" is completed by subsequent nodes continuing execution along the branch. When the user selection node is triggered, the conversation enters an interactive state and records the workflow status; after the user completes the selection, execution continues along the branch corresponding to the selected option.

ObjectCheckVerification action
Hazardous chemical procurement applicationWhether the name, quantity, application date, and approval signature are consistent with the usage registration and inventory ledgerCompare the product name, quantity, date, and signature of the three materials one by one, and check whether variables are passed to subsequent nodes
Usage registrationWhether the user, usage date, actual issued quantity, and receipt signature match the procurement application and inventory ledgerTrace each usage record one by one to the procurement application and ledger, and check the branch direction corresponding to nodeId
Inventory ledgerWhether the balance quantity, inbound and outbound dates, and custodian signature match the procurement application and usage registrationTrace back to the two materials by ledger date and quantity, and check the variables references and branch records
Exception list and review conclusionWhether the exception is supported by original records and whether the reviewer has signedAttach each exception item to the original material number and signature field one by one, and check the branch direction and interaction status records

Three common errors

  • Phenomenon: The name, quantity, and date of the same record do not match between the procurement application and the inventory ledger. Cause: The two materials are entered separately, no field-level comparison is performed, and differences are not identified.
  • Phenomenon: The usage registration has been updated, but the inventory ledger still remains at the old version. Cause: The versions are not synchronized, the update rhythms differ, and the ledger is not refreshed with the usage records.
  • Phenomenon: The usage registration lacks a receipt signature, and the procurement application lacks an approval signature. Cause: The signature step is not closed-loop, and the signature fields are not checked item by item when materials are transferred.

How to verify the setup

How to verify the setup: Acceptance of this feature: run through each option one by one, check the branch direction and interaction status in the run records, and confirm that each option corresponds to one branch and that the selection result variable has been passed to subsequent nodes.

Business test: create one exception record, see whether it can be traced to the source material, and check whether the exception is supported by original records and whether the reviewer has signed.

  • In the user selection node, check the options and branch connections one by one, trigger it once, and view the node status and nodeId in the run records.
  • Reference the selection result variable in a subsequent node and run it once, and check whether variables take effect and whether the exception list can be traced to the source material.