Solution : https://service.sap.com/sap/support/notes/732628 (SAP Service marketplace login required)
Key words :
call function 'bapi_bus1077_savefrombuffer' exporting flg_luw_close_for_bapi = 'x' tables return = l_return exceptions, boolean input parameter flg_buffer, sap erp 2004 support package 01, sap erp 2004 support package 02, flg_luw_close_for_bapi type spec, function module bapi_bus1077_savefrombuffer, call bapi_bus1077_savefrombuffer, function module c1f2_substances_save_to_db, bapiin transactions programmed, start transaction se37
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| 1555822 | Creating several relationships in a (B)API call |
| 1537943 | Usage not displayed for restrictive authorizations |
| 1534533 | BAPI_BUS1077_GETLIST, error CX_SY_DYN_CALL_ILLEGAL_TYPE |
| 1526269 | EH&S Expert incorrectly displays an error |
| 1520381 | BAdI messages missing in C1F5_SPECIFICATIONS_READ |
| 1509009 | (B)API cannot generate sorting for identifiers |
| 1505911 | API changes referenced value assignments |
| 1494425 | Delete (B)API deletes inherited value assignment instances |
| 1490665 | Reading specifications takes a long time |
| 1484936 | Internal system error when copying specifications |
| 1134755 | ALE distr. of new inheritance relationships and sources |
| 953708 | Create BAPI does not create material assignments |
| 914719 | Inheritance is not updated after the set of rules has run |
| 800918 | Rules for API programming with SAPLC1F2, SAPLC1F5 |
| 739321 | Corrections EH&S 2.7B: Support Package 09 |