"We made a rod for our own back against Connacht", said Solomons.
"A consequence of not playing for a month and fielding new combinations is that we made too many unforced errors and consequently were unable to attain field position in the second-half.
"Overall I'm happy with how we've reacted and trained this week.
"I'm happy with the direction in which these guys are going but we always have to be introspective, and cut our error rate."
The only changes to the 23-man squad see elite development front-row forwards George Turner (hooker) and Ewan McQuillin (prop) come on to the bench for Ross Ford and Geoff Cross, who have been selected for Scotland to face Italy in the RBS 6 Nations.
Replacement appearances would realise long-awaited debuts for the young pair who were given the same opportunity a fortnight ago against Dragons, only for the match to be postponed because of an unplayable pitch.
Last weekend it was Scarlets' turn to have a match fall foul of the inclement weather and, while their 41-33 victory in Treviso in the previous round ended a four game losing run in the RaboDirect PRO12, they have won six of the last seven contests with the capital club.
"Tomorrow's match is a tough assignment", said Solomons.
"They [Scarlets] are well-balanced, well-organised side that's been together for some time, and that makes a big difference.
"It will be a very tough game for us going there but we're looking forward to it and are looking for an improved performance from the match against Connacht.
"The more this team practice and play together the more cohesive we will become. If we can keep our momentum of improving I think this team will continue to come together well."
Edinburgh Rugby team to face Scarlets at the Parc y Sarlets on Saturday 22 February (kick-off 2.30pm)
15 Jack Cuthbert
14 Dougie Fife
13 Nick De Luca
12 Andries Strauss
11 Tom Brown
10 Carl Bezuidenhout
9 Grayson Hart
1 Wicus Blaauw
2 James Hilterbrand
3 Willem Nel
4 Grant Gilchrist
5 Izak van der Westhuizen
6 Mike Coman CAPTAIN
7 Roddy Grant
8 Cornell Du Preez
Substitutes
16 George Turner
17 Alex Allan
18 Ewan McQuillin
19 Ollie Atkins
20 Tomas Leonardi
21 Sam Hidalgo-Clyne
22 Sam Beard
23 Harry Leonard
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