Solution : https://service.sap.com/sap/support/notes/925328 (SAP Service marketplace login required)
Key words :
enqueue failure warning messages, terms smart sync, 40 aba support package 17, i-waiting status, merep_503' warning messages, 'enqueue failure, enqueue failure, messages coming, merep_503 reason, merep_503 table
Related Notes :
| 916444 | SAP Mobile Infrastructure 2.5 SP16 - composite note |
| 888482 | SAP Mobile Infrastruct. 2.5 SP15 - Composite Note |
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| 838035 | SAP Mobile Infrastruct. 2.5 SP13 - composite note |