We are converting our legacy conversion groups from C to ABAP. How do we convert our legacy LPG conversion groups?

For SAP legacy template conversion groups for crude oil and products, an automated conversion tool from C to ABAP is available within the PMC.

This is not the case for LPG:

Historically, SAP delivered exactly one LPG conversion group example, SAP template conversion group 234E (relative density, 60 °F base temperature), which customers could activate at their own risk:

Technically, an example ABAP function module – based on superseded measurement standard GPA TP-25, but not successfully reproducing all GPA TP-25 test examples –  was delivered by SAP for 234E. Customers had to copy and adjust this example ABAP function module to their requirements. Some customers also utilized this example to build their own metric conversion group 534E (absolute density, 15 °C base temperature) or 596E (absolute density, 20 °C base temperature), which both were never delivered by SAP.

Alternatively, many customers utilized a customer specific range extension of the API / ASTM D1250 1980 C-Code implementation, to be able to enter LPG data (with density values much lower than 600 kg/m³). This approach can be very harmful and should be avoided – details can be found in our Case Study on LPG Measurement Standard Selection.

Thus, if you attempt to migrate your legacy (C or ABAP) LPG implementations to QuantityWare BCS, differences in calculation results will most likely occur, as explained above.

• For 234E type legacy conversion groups, QuantityWare recommends to manually change the configuration – if you need to keep the technical name identical – to that of template conversion group Q715.
• For 534E type legacy conversion groups, QuantityWare recommends to manually change the configuration – if you need to keep the technical name identical – to that of template conversion group Q711.
• For 596E type legacy conversion groups, QuantityWare recommends to manually change the configuration – if you need to keep the technical name identical – to that of template conversion group Q713.
• For all other LPG legacy conversion groups, a similar approach as described for 234E, 534E or 596E may be chosen, depending on the detailed specifications (base temperature 15 °C or 60 °F or 20 °C and density type – relative density or absolute density).
• It is not recommended to continue utilizing a range extended ASTM D1250 implementation for LPG.

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