Solution : https://service.sap.com/sap/support/notes/2175164 (SAP Service marketplace login required)
Key words :
subsequentsap_fin720720 correction instructions correction instructionssoftware componentvalid fromvalid tonumbersap_fin7207201868392 support packages & patches support packagessoftware componentreleasesupport packagesap_fin720sapk-72002insapfin, customer component fin-fscm-clm-bam bank account management priority correction, medium priority category program error validity software componentfrom rel, prerequisites program error solution, correction instructions, support package stack, / __%pdfstyle%__font-size, __%pdfstyle%__ / } symptom, passing input parameters is_t012k, function module fclm_bam_account_create fails