SQL30080N error points to two documents SC31-6160 and (SC31-6156

If I face this problem: SQL1476N with sqlerror "-30080", then I check this other error:

db2 ? sql30080   SQL30080N  A communication error "<reason-code>" occurred sending or       receiving data from the remote database. ... Refer to the document IBM Communications Manager 1.0 APPC Programming Guide and Reference (SC31-6160) for explanation of the APPC primary and secondary return codes. For details of APPC sense data, refer to the IBM Communications Manager 1.0 Problem Determination Guide (SC31-6156). 

When can I get information about these documents?

  • IBM Communications Manager 1.0 APPC Programming Guide and Reference (SC31-6160).
  • IBM Communications Manager 1.0 Problem Determination Guide (SC31-6156)

Reference:

https://www.ibm.com/docs/en/db2/11.5?topic=SSEPGG_11.5.0/com.ibm.db2.luw.messages.sql.doc/sql28000-sql33999.html#sql30080n