HP NSARPA/1000 manual 30

Code	Meaning	Action
19	Message size option error. An	Check the AddOpt call used to
	illegal value was specified in the	insert the option request to
	opt parameter for either the	make sure it contained the
	maximum send or maximum	intended value.
	receive size option. The value
	specified was probably less than
	or equal to zero.
20	Data offset error. An illegal value	Check the length and offset
	was found in the offset option in	values that were input to the
	the opt parameter.	opt parameter with AddOpt.
21	Duplicate option. At least one of	Check arguments input to
	the options in the opt	AddOpt when initializing the opt
	parameter was specified twice.	parameter.
24	Connection queued option error.	Check the AddOpt call that was
	An error was detected in the	used to put the option
	arguments regarding the	arguments in the opt
	maximum number of	parameter.
	connections queued option in
	the opt parameter.
28	Illegal name length. The name	Compare the name length to the
	length was either too large or	acceptable range for this
	too small.	parameter.
29	Illegal descriptor. The	Determine why the value was
	referenced descriptor is outside	not within the acceptable range.
	of the acceptable range for	One possible reason is that the
	descriptors.	call to allocate the descriptor
		failed.
30	Cannot name VC socket. The	IPCName cannot be invoked
	calling process tried to name a	against VC sockets.
	VC socket using IPCName.
31	Duplicate name. The name that	One of the following actions may
	IPCName tried to assign to a	be taken: (1) Pick another
	socket was already in use.	name; (2) wait and try again; (3)
		if several copies of the same
		process are running, make sure
		that each process has some
		way of generating a unique
		name. IPCName has a random
		name generation facility that
		could be used, or the calling
		process could wait and try again
		later.

212 Numeric Error Codes