Solution : https://service.sap.com/sap/support/notes/334219 (SAP Service marketplace login required)
Key words : 
object class       'conditions'tab linked bdoc type 'cnd_mast_deep_sup'block size         '1000'function           <space>user flow context'crm' 'cdb' 'cdb' mbdoc type initial loadtables/structures'cnccrmprsap057' <<<<<<<<<<<< replace, crmobject class      'conditions'tab linked bdoc type 'cnd_mast_deep_sup'block size        '1000'function          <space>tabinitial flow contextuser flow context', crmobject class       condcustomizinglinked bdoc type   <space>block size         '1000'tabinitial flow contextsource site categ, object>upload release     <space>block size         '1000'function           <space>object inactive    <space>, user   flow context'crm'                'cdb'                'cdb'      mbdoc initial loadtables/structures, otherwhise <space>upload release    <space>block size        '1000'object inactive   <space>, otherwhise <space>upload release   <space>block size       '1000'object inactive  <space>, object>upload release     <space>block size         '1000'object inactive    <space>, vadat part                    mapping module downloadmapping module downloadmodule'cnd_map_mast_exchange_main_mbd'important, /3' 'crm' 'crm' mbdoc type validatetables/structures'a057' <<<<<<<<<<<< replace
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