Extended Purchase Order History 
You can use the Extended Purchase Order History function both on the document header and the line item level. From this tab, users can display SAP ERP back-end documents, such as:
Goods receipts
Service entry sheets
Invoice receipts
Payment documents
Clearing documents
Funds Management (FM) accounting documents
If you have not activated FM in the SAP ERP back end, instead of FM accounting documents users can access regular accounting documents (FI-GL).
You can use Smart Forms to capture a snapshot of the information available in the Extended Purchase Order History. This snapshot is sent to SAP Records Management and stored as a PDF file that you can display and, for example, take as a record of payments from the organization to the supplier. (More sophisticated reporting capabilities are available through SAP NetWeaver Business Intelligence (SAP NetWeaver BI)).
This function is used in the following business scenarios:
Operational Procurement
Procurement Services
In SAP SRM, you have activated the following business functions:
SAP SRM Procurement for Public Sector Basis (/SAPPSSRM/SRM_CROSS_INDUSTRIES)
SAP SRM Procurement for Public Sector Functions (/SAPPSSRM/SRM_PPS)
To display the Smart Form contents in SAP Records Management, you have specified the name of the Smart Form to be used by implementing the Business Add-In (BAdI) Determine SmartForm for Extended PO History (/SAPPSSRM/PO_HSMRTF1) in Customizing for SAP Supplier Relationship Management under .