Save (calculation) units for invoice printing
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The expressions for the calculation units
Quantity unit
Price unit as well as
Time unit
are saved in eafapo_t when saving outgoing vouchers
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(e.g. Code/Tariff M oder L).
This is mainly used to create Crystal Reports prints.
(eafapo_t.einh_m_bez, eafapo_t.einh_p_bez, eafapo_t.einh_z_bez).
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